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AI assistants: a free course on ChatGPT, Claude, NotebookLM and Gemini

Mindket editors · Updated · 4 lessons · 25 min

A black banner titled "AI assistants" over the line "ChatGPT, Claude, NotebookLM and Gemini".

This free course shows newcomers how to use the four big AI assistants for everyday work: ChatGPT, Claude, NotebookLM and Gemini. Each lesson sets up the feature that saves the most retyping, such as custom instructions, a project, a notebook of sources or a Gem, with button names from the vendor's own guides. No code or terminal is needed.

What you'll be able to do

  • Set ChatGPT's custom instructions and memory, and keep recurring work in a Project.
  • Build a Claude project with knowledge files and instructions, and export what Claude makes.
  • Ask questions of your own documents in NotebookLM and check each answer against its citation.
  • Save a repeated prompt in Gemini as a Gem or a skill, and call Gemini inside Gmail and Docs.
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Who it's for

For people who use ChatGPT, Claude, NotebookLM or Gemini at work or at home, or want to start. You need an account with at least one of them and no coding, though some features the lessons describe need a paid plan.

Lessons

  1. 1How to use ChatGPT: chats, instructions, memory and ProjectsLearn how to use ChatGPT for everyday work: run a first chat, set custom instructions, manage memory, keep work in Projects and attach files and images.7 min
  2. 2How to use Claude Projects, with artifacts and memoryLearn how to use Claude Projects: add knowledge files, set project instructions, export artifacts and control what Claude remembers between chats.6 min
  3. 3NotebookLM tutorial: sources, cited answers and overviews in Gemini NotebookA NotebookLM tutorial for beginners: add sources, ask questions with clickable citations, and make Audio Overviews, Video Overviews and mind maps.6 min
  4. 4How to use Google Gemini: the app, Gems and skills, Gmail and DocsLearn how to use Google Gemini: chat at gemini.google.com, save instructions as a Gem or a skill, and use Ask Gemini inside Gmail and Google Docs.6 min

Frequently asked questions

Is this AI assistants course free?

Yes. Every lesson is free to read. Some features they describe need a paid plan or a work account, and each lesson says which wherever the vendor states it.

Which AI assistant should I start with?

The one your work already runs on. If your files sit in Google Drive and Gmail, Gemini and NotebookLM reach them with the fewest steps. Otherwise begin with lesson 1, since ChatGPT's custom instructions and Projects have close relatives in Claude and Gemini.

Is NotebookLM still called NotebookLM?

No. Google renamed it Gemini Notebook on 16 July 2026. Most people still search for the old name, so lesson 3 uses both.

Do I need to know how to code?

No. Every lesson works in a browser or the vendor's app, with no terminal and no code.

What should I learn after this course?

The Write with AI course is next. It shows how to draft and edit with AI in your own voice, and what AI detectors can and cannot tell.

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Give your assistant new skills

Claude and Gemini both load skills: saved instructions an assistant uses when a task calls for them. Mindket lists skills you can open and read before you add one.

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