Upload your first source

Sources are the raw material Ritsu turns into Points of Knowledge. You can upload PDFs, import YouTube videos, paste a URL, or paste plain text. Three minutes from upload to studying.

1. Open the Sources page

From the dashboard, click Sources in the left sidebar. You'll see your library. If this is your first time, it's empty.

2. Pick an upload method

Three buttons at the top of the Sources page:

• Upload file — drag-drop or click to pick a file. PDFs, DOCX, PPTX, MP4, audio.
• Paste link — paste a YouTube URL or any web page URL. Ritsu fetches and processes.
• Paste text — for when you have copy you want to study but no file (lecture notes, an article body).

3. Wait for processing

Processing takes anywhere from a few seconds (short article) to a couple of minutes (200-page PDF, hour-long video). You'll see a progress indicator. Closing the tab is fine — Ritsu keeps processing in the background.

When it's done, you'll see:

• The source listed in your library
• A handful of Points of Knowledge auto-extracted from it (one per chapter / section / topic)
• A Quick Start session suggestion that picks one PoK and runs /explain on it

4. Pick a PoK and start

Click any PoK to open the Learning Chat scoped to that PoK. From there, run /explain, /quiz, /flashcard, or any command — Ritsu uses the source content as context.

Tips

• Bigger isn't better. A 50-page PDF makes for sharper PoKs than a 500-page textbook. If you're studying one chapter, upload one chapter.
• Paste-text beats screenshot. OCR works but introduces errors. If you have the source text, paste it directly.
• Languages mix. Source can be in any language; Ritsu's responses follow the source language by default. Switch language explicitly with /lang en.

Troubleshooting

If processing fails, see Upload failed. Most failures are file-size or format issues — full list in Supported file types.

Next

• Start your first learning session on the PoK you just created