AI Operating Guide Series
VELOR · EDITION 02
100items

Gemini Field Guide to Mastering Gemini

The Gemini guide is VELOR's free AI education resource: 100 practical items on using Gemini at work, written for seniors and mid-career professionals. One hundred items for putting Gemini to work, across ten domains — setup, model choice, prompting, Gems, Workspace, and Deep Research. A person stays accountable for every output.

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Document

DocumentAI-GEMINI-GOOGLE
ClassFree · Team
Sections10
Items100
Current modelsGemini 3.1 Pro · Gemini 3.5 Flash
As of2026.06
01

Getting Started

Start on web and mobile with your Google account.

001
Sign in at gemini.google.com with your Google account to start right away.
002
Install the Gemini app on your phone to ask by voice too.
003
Tap the sample prompts on the home screen to get a feel for it.
004
Ask in Korean; if the answer is hard, add 'explain it simply.'
005
Chats are saved automatically, so you can pick up an earlier topic.
006
If text is small, zoom the browser (Ctrl and +) to read comfortably.
007
Don't enter sensitive personal data such as ID or bank numbers.
008
Tap the suggested follow-ups under a reply to go deeper.
009
Start free; consider a paid plan when you need the stronger model.
010
Copy answers into email or docs to use them at work immediately.
02

Pick the Right Model

Choose the model that matches the task.

011
For complex analysis or planning, pick the most capable Gemini 3.1 Pro.
012
For quick summaries or translation, Gemini 3.5 Flash is enough.
013
Switch models from the selector above or beside the input box.
014
If an answer is shallow, rerun the same question on Gemini 3.1 Pro.
015
For whole long documents, use the model that handles more context.
016
Choose Gemini 3.5 Flash for speed and Gemini 3.1 Pro for accuracy.
017
Default to Gemini 3.1 Pro when numbers and logic matter.
018
Switching models keeps your conversation context.
019
Not sure which model? Just ask 'which model is this?'
020
Before an important decision, compare answers from both models.
03

Prompting

Be short and specific; give context and the format you want.

021
Put 'what, for whom, in what format' into one sentence.
022
Share your context (field, experience, goal) first for tailored answers.
023
Specify the output: 'as a table,' 'in 5 lines,' 'as an email.'
024
Give one example to get much closer to what you want.
025
Ask one thing at a time, then build on the result.
026
If it's too long, ask to 'cut it to the 3 key points.'
027
For jargon, ask to 'explain it for a middle-schooler.'
028
Set the tone too — 'polite,' 'not too formal.'
029
Fix mistakes on the spot with 'correct this part.'
030
Save good prompts and reuse them next time.
04

Gems

Turn recurring tasks into a dedicated assistant.

031
A Gem is your own assistant with a preset role, tone, and rules.
032
Make a Gem for one purpose, like a 'resume reviewer.'
033
Write rules in the instructions, e.g., 'always Korean, polite.'
034
Attach frequently used files so you don't upload them each time.
035
Call a saved Gem with one tap from your list.
036
A task-specific Gem saves time on weekly work.
037
Add a sample answer to lock in the quality you want.
038
Edit a Gem's instructions anytime to make it smarter.
039
Browse prebuilt Gems and grab what you need.
040
Especially useful for experts with repetitive advisory or teaching work.
05

Google Workspace

Connect with Gmail, Docs, Sheets, and Drive.

041
Summarize a long Gmail and get a reply draft.
042
Draft a Google Doc with Gemini and refine it in place.
043
Get help with spreadsheet formulas and table cleanup.
044
Have it answer using your own files in Drive.
045
Search and summarize your inbox, e.g., 'sum up last week's meeting emails.'
046
Turn integrations on in settings, and off when not needed.
047
Get meeting notes as a Doc and share them by link.
048
Combine with Calendar to organize your day.
049
Check the sharing scope before connecting sensitive files.
050
Open the source file to verify the facts yourself.
06

Deep Research

Gather many sources into a structured report.

051
Deep Research scans the web broadly and builds a report.
052
Give a broad topic, e.g., 'trends in Korea's senior job market.'
053
It shows a research plan first — review it, then let it run.
054
Check the finished report against its source links.
055
Export the result to a Google Doc to edit and share.
056
It shortens slow tasks like market or competitor research.
057
If the report is long, ask for a one-page summary.
058
Double-check figures against the original sources.
059
Use follow-ups to dig deeper into one section.
060
Use it directly to prep advisory work or lecture material.
07

Canvas & Docs

Draft and edit long text or code in a side panel.

061
Canvas opens your text beside the chat so you can edit parts of it.
062
Refine a report or article draft paragraph by paragraph.
063
Ask for partial edits like 'shorten just this paragraph.'
064
Make versions by changing length, tone, or audience.
065
Set the structure with tables or lists, then expand.
066
Copy the finished text into email, blog, or docs.
067
Even without coding, try building a simple automation script.
068
Run a final spelling and style pass.
069
Revert and compare if an earlier version was better.
070
Quickly draft proposals or intros to save time.
08

Multimodal

Understand photos, create images, and talk by voice.

071
Upload a photo and ask 'what is this and how do I use it?'
072
Turn photos of receipts or forms into a table.
073
Photograph a foreign sign to translate and summarize it.
074
Generate images for slides or promotion by describing them.
075
Snap a handwritten note to convert it to digital text.
076
Use voice mode to ask and listen when your hands are busy.
077
Upload a chart image to get the key takeaways explained.
078
Check usage rights before using a generated image.
079
Give a product photo and get description copy.
080
Listen to answers by voice to rest your eyes.
09

Personalize & Use Your Files

Save your info and files for more relevant answers.

081
Save recurring context (role, clients, goals) to skip retyping.
082
Upload long files and say 'answer only from this.'
083
Upload several documents at once to compare and summarize.
084
Pull the key clauses from a PDF contract or manual.
085
If it strays, insist 'only what's in the file.'
086
Review and delete saved info anytime in settings.
087
Ask for the source (page, filename) to keep evidence.
088
Upload a meeting transcript to extract decisions and to-dos.
089
Put frequently referenced files into a Gem for ongoing use.
090
Check the retention and sharing policy before uploading sensitive files.
10

Safe Use & Governance

A human checks and stays accountable.

091
AI output is a draft; final judgment and accountability stay human.
092
Always re-verify numbers, dates, and rules against the source.
093
Read with an eye for convincing but wrong answers (hallucinations).
094
Pause before entering client or company secrets.
095
Never enter personal IDs or account numbers.
096
Release important documents only after a human review.
097
Don't cite claims that lack a clear source.
098
For medical, legal, or tax matters, confirm with a professional.
099
Use within your company policy and the terms of service.
100
AI saves time but never replaces your expertise.

FAQ

QWhat is Gemini best at?

Integration with Google Search, Gmail, and Docs. Useful for email drafts and search-grounded answers.

QCan I use Gemini with just a Google account?

Yes — start right away with a Google account. This guide explains the screens and features step by step for seniors.

QWhat should I try first with Gemini?

Paste an email and ask it to 'draft a polite reply.' The 100-item guide gives more examples.

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