VELOR · EDITION 01
100items
Claude Field Guide to Mastering Claude
The Claude guide is VELOR's free AI education resource: 100 practical items on using Claude at work, written for seniors and mid-career professionals. From what to click the first time you open it to producing real documents such as a résumé or an advisory proposal. Based on Anthropic's official guidance, organized into 100 items across 10 areas. Follow them in order and you will have one finished piece in hand today. A person makes the final check on every result.
CONTENTS / 목차
01
Getting Started — From Sign-up to the First Screen
001–01002
Your First Conversation — What to Ask and How
011–02003
Have It Read Your Documents — Upload Files and Put Them to Work
021–03004
Projects — Keep Recurring Work in One Place
031–04005
Making Outputs — Documents, Tables, Simple Screens
041–05006
Keep Your Own Voice — Style Settings
051–06007
Make It Think Deeper — Extended Thinking and Research
061–07008
In Practice — Résumés, Advisory Proposals, Business Reports
071–08009
Fact-Checking — Be Ready for When It's Wrong
081–09010
Using It Safely — Personal Data and Limits
091–100
01
Getting Started — From Sign-up to the First Screen
It's free to start. First, learn where to click.
001
Go to claude.ai and sign up with your Google account. You can start for free.
002
On a phone, get the Claude app from your app store. Your conversations carry over from the computer.
003
The wide box in the middle of the screen is where you type. Just write in your own words.
004
Past conversations pile up in the list on the left. Click yesterday's work to pick up where you left off.
005
Conversations are titled automatically. Rename the important ones so they're easy to find later.
006
The paperclip button under the input box is for uploading files. PDFs, Word files and photos all work; save Hangul (hwp) files as PDF first.
007
If you don't like an answer, press retry. You don't need to explain everything again.
008
The free plan is enough for a lot of work. If you hit the limit, it reopens a few hours later.
009
Upgrading raises your limits and unlocks more capable models. If there's no rush, learn on the free plan first.
010
Set the language to Korean in settings and the on-screen guidance will be in Korean too.
02
Your First Conversation — What to Ask and How
A good question is specific, not long.
011
"Write a report" is weak. "Write a three-page equipment investment review for the CEO of a small manufacturing company" is far better.
012
Say who will read it. Once the reader is clear, the level of the writing changes.
013
Ask for one thing at a time. Ask for five at once and all five come out blurry.
014
Give the length as a number. "Under 800 characters" is more precise than "keep it short."
015
Attach one good example. One example beats ten lines of explanation.
016
Add "natural, like a person talking — not like AI wrote it" and the sentences read more naturally.
017
Often it's better to give the goal and not the method. Claude will find the approach.
018
If the result misses, don't start over. Point to what to fix, such as "make only the third paragraph more specific."
019
Tell it up front to say "I don't know" when it doesn't know. It's the easiest way to cut down on made-up answers.
020
State important requirements once at the start and once at the end of your instructions. They get followed more reliably.
03
Have It Read Your Documents — Upload Files and Put Them to Work
Hand over a long report or contract and get just the key points.
021
Upload the whole PDF you received and ask for "the three key points and the conditions I must not miss."
022
Save Hangul (hwp) files as PDF before uploading. It's the safer route.
023
It reads photos too. Snap a paper job notice and ask it to pull out only the eligibility requirements.
024
Upload a spreadsheet and ask, "Which months did sales drop, and which items might explain it?"
025
Upload several files at once and have them compared. Try putting last year's and this year's contracts side by side.
026
Always add: "Don't make up anything that isn't in the original. If it's not there, say so."
027
For long documents, ask it to "show the evidence with page numbers." Checking becomes much easier.
028
With contracts, ask first for "clauses that could work against me" rather than a summary.
029
If a file is large, upload only the part you need. It gets faster and more accurate.
030
Make a habit of removing personal data (resident ID numbers, account numbers, contact details) before uploading.
04
Projects — Keep Recurring Work in One Place
So you don't have to explain the background every time.
031
A project groups related conversations and materials together, like a folder.
032
Free accounts can create projects too. Start from the menu on the left.
033
Make an "About me" file and put it in the project. Write down your career, field of expertise and tone.
034
Every conversation in a project refers to the materials in it. No need to paste them each time.
035
Split projects by purpose — one for advisory work, one for job hunting — so answers don't get mixed up.
036
Write rules like "polite, no exaggeration" in the project instructions and they'll be followed every time.
037
Keep the latest résumé and career description in the project so you don't have to re-explain them for each application.
038
Add your company profile or rate card if you use them often. Proposal drafts come faster.
039
When materials change, upload the new file to replace the old one. If the old file stays, answers will use the old content.
040
Don't keep sensitive client data in a project. Use it and delete it as you go.
05
Making Outputs — Documents, Tables, Simple Screens
Outputs open in a separate panel beside the chat, and you can edit them.
041
When you create a long document or table, a separate output panel opens beside the chat.
042
You can keep editing what's in that panel as the conversation goes on. No need to make it again from scratch.
043
Ask for partial edits like "change only the third item" and the rest stays as it is.
044
When it's done, copy it into Hangul or Word. Formatting mostly carries over.
045
Ask for a table and it comes out in a form you can paste into a spreadsheet.
046
It can also make small working screens, like a simple calculator or checklist, that you can try right away.
047
For presentations, have it draft slide titles and key sentences first, and fill in the numbers yourself.
048
When an output gets long, ask for "two versions: a summary and the full text."
049
When several versions pile up, save the one you like separately.
050
Before printing or emailing, always have a person read it through once.
06
Keep Your Own Voice — Style Settings
Swap AI-sounding sentences for the way you actually write.
051
You can choose a response style in settings — concise, detailed and so on.
052
Paste two or three pieces you've written before and say "rewrite in this voice." That matches best.
053
Name the expressions you don't want in advance. For example: no bold text, no English mixed in.
054
If you dislike stiff officialese like "please be advised," say so and it will change.
055
Email and blog posts need different tones. Say what it's for and it adjusts.
056
If sentences run long, ask for "one idea per sentence, short."
057
If you dislike hype, write "leave out words like 'best' or 'innovative' — facts only."
058
Put tone rules you use often in the project instructions so you don't have to repeat them.
059
If something still sounds off, paste that sentence and say "don't explain why, just fix it."
060
Read it aloud. The sentence you stumble over is the one to fix.
07
Make It Think Deeper — Extended Thinking and Research
Turn it on only for complex judgment calls. You don't need it all the time.
061
For work that needs complex judgment, turn on the feature that makes it think longer.
062
For simple tasks like tidying an email or meeting notes, leaving it off is faster and better.
063
Ask it to "lay out the reasoning step by step, then conclude" and gaps in the logic become visible.
064
If you need research, it can search the web and summarize. Always ask for the sources too.
065
Click the links in research results and check the originals yourself. Quoting from the summary alone is risky.
066
Ask it to "also lay out the opposing view" to filter out one-sided conclusions.
067
Facing a decision? Ask, "What are three risks I've missed?"
068
When answers run long, set the order: "conclusion first, then the reasoning."
069
For things where accuracy matters, like statistics and laws, always double-check against the official source.
070
Thinking longer uses more of your allowance. Turn it on only when you need it.
08
In Practice — Résumés, Advisory Proposals, Business Reports
Concrete ways to turn 20 years of experience into documents.
071
For a résumé, paste your career list and ask for "results-focused, and flag anywhere a number is missing."
072
Name the employer and it will reorder your experience to suit that company.
073
Ask for a cover letter in a "problem — what I did — result" structure. It's easier for the reader to follow.
074
In an advisory proposal, put the client's problem in the first paragraph. Your career comes after.
075
Upload an evaluator or advisor recruitment notice and ask it to pick "the parts of my career that meet the requirements."
076
For interview prep, ask for "ten likely questions and evidence from my career to answer them."
077
For a business report, make the one-page summary first and attach the detailed version after it.
078
For a lecture or talk proposal, decide only the audience, the length and three topics, and a draft follows.
079
Twenty years of experience is an asset in itself. But it sells when you reframe it from a list into "what problems this person solved."
080
Paste the career summary you've finished straight into your VELOR registration. You decide whether companies and institutions can see it.
09
Fact-Checking — Be Ready for When It's Wrong
AI can be wrong in convincing ways. The habit of checking is the real skill.
081
AI says things it doesn't know with confidence. Always question numbers, years, laws and quotations.
082
Ask "what's the source for this?" to check whether there's a basis.
083
The rule for statistics is to check them directly in the original from Statistics Korea or the relevant ministry.
084
Leave legal and tax judgments at the draft stage, and get the final check from a professional.
085
It sometimes invents papers or articles that don't exist. Always click the links.
086
Asking the same question again in a new conversation and seeing if the answer matches is another good check.
087
Errors are easiest to spot in your own field. The parts that feel off are usually the parts that are wrong.
088
Ask it in advance to "mark anything you're not sure about" and you'll have fewer places to verify.
089
Recent events may be after its training cutoff. For anything date-sensitive, have it search as well.
090
The final responsibility lies with the sender. "AI wrote it" is not an excuse.
10
Using It Safely — Personal Data and Limits
What not to upload, and what a person must always decide.
091
Don't upload resident registration numbers, account numbers or card numbers.
092
Remove names before uploading client lists or a counterparty's personal data.
093
For company confidential material, check your company's rules first. If there are none, it's safer not to upload it.
094
Use health and investment answers for reference only, and consult a doctor or professional.
095
You can delete conversations in settings. Delete sensitive conversations when you're done.
096
Creating a share link makes that conversation visible to others. Check that it contains no personal data.
097
If you publish AI-written text as is, remember that you are responsible for the facts.
098
Pasting someone else's text in full and saying "rewrite this" can be a copyright problem.
099
Get consent before uploading photos of family or friends for analysis.
100
When in doubt, stop and ask. Checking always costs less than an accident.
Korean Resources
Curated Korean creators, well-known sites, and official docs — with sources. Read the originals at each link.
001
Anthropic · Claude 고객지원 센터·2026
Claude 시작하기 — 공식 한국어 도움말
Anthropic's official Korean help article on getting started with Claude.
↗
002
Anthropic · claude.com·2026
Claude 앱 내려받기 — 휴대폰·컴퓨터
Official apps for phone and computer. Conversations carry over on the same account.
↗
003
Anthropic · Claude Academy·2026
Claude Academy — 무료 공식 강좌(영어)
Free official courses from Anthropic on working with Claude.
↗
004
황민호 · Kakao · GitHub·2025
Claude Code 마스터링 — 한국어 가이드북
For developers — A full Korean Claude Code guidebook by a Kakao engineer — from install to real workflows.
↗
005
위키북스 · brunch·2026
클로드 코드 제대로 쓰는 법 — 5가지 필수 설정
For developers — Five core Claude Code settings — CLAUDE.md, permissions, and more.
↗
006
skysoo · velog·2025
Claude Code 완벽 가이드 — 한글 요약본
For developers — A Korean summary of the popular 'Cooking with Claude Code' guide.
↗
All listed materials remain the copyright of their authors and publishers. This page links to sources with attribution and does not reproduce their content.
FAQ
QWhat is Claude best at?
Reading long documents and contracts, then summarizing the key points — and careful writing. Useful for reviewing reports and summarizing materials.
QIs Claude free to use?
A free plan covers everyday use; consider a paid plan for heavy use. This guide starts within the free tier.
QWhat should a first-time Claude user try?
Paste a long document and ask, in plain language, to 'summarize the three key points.' The 100-item guide walks you through it.
VELOR insights · career hub
Content connecting AI skills to senior careers.