Learn AI · 6 lessons · Free, live now
Working with Documents and Data
The AI can read your files, but not the way you do. Six lessons on uploads, spreadsheets, and standing knowledge, so you get real answers from your own documents without surprises.
When you finish, you can
Upload a document or spreadsheet, know exactly what the AI can see in it, ask questions that get accurate answers, and keep private files private.
The lessons
- 01What AI can see in your fileTyped text, scans, tables, charts, and photos are not the same to an AI. What actually gets read, and why a scanned PDF can come back empty.
- 02Uploads and their limitsFile sizes, page counts, the context bucket, and the point where the AI quietly stops reading. Plus how to chunk a long file.
- 03Spreadsheets and tablesWhy AI miscounts, how to make it compute instead of guess, and the code-running features in ChatGPT, Claude, and Gemini explained without jargon.
- 04RAG in plain EnglishHow an AI answers questions about documents it has never seen before: search first, then read, then answer. And why it can still miss.
- 05Projects and knowledgeClaude Projects, ChatGPT Projects, Gemini Gems, and Gemini Notebook compared, so you stop re-uploading the same files every chat.
- 06Privacy for your filesWhat happens to a document after you upload it, the training switches in each tool, and what a business should never upload.