A short guide to studying here.

The daily loop

1. Open the home page. Your Due count tells you what the scheduler wants you to review right now. Hit the primary button - it starts an FSRS session with those cards.
2. Read the front. When you're ready, press SPACE to reveal the answer.
3. Rate your recall with 1 (Again), 2 (Hard), 3 (Good), or 4 (Easy). Honesty here is the point - the algorithm needs a signal it can trust.
4. Do 20–50 cards, take a break, come back tomorrow.

FSRS in one paragraph

FSRS (Free Spaced Repetition Scheduler) estimates two things per card: how stable your memory of it is, and how difficult it is for you. After each grade it updates both estimates and schedules the next review at the point where your recall probability is about 90 %. That means cards you miss come back within a day; cards you crush drift out weeks or months. The system pushes you into the zone where you're forgetting just enough to make each review count.

Review modes

Five modes, chosen when you start a session. The defaults get you moving; the others are for targeted work.

• Spaced repThe recommended default. Due-scheduled cards first, new cards mixed in as capacity allows. This is what you’ll want most days.
• NewOnly cards you’ve never reviewed. Useful when you want to seed a new section before the scheduler starts folding it in.
• IncorrectOnly cards you’ve missed or that have lapsed. A quick cleanup pass before an exam block.
• AllEvery card in the selected section, regardless of state. Handy for skimming a whole domain.
• CramRapid drill with a session-only mini-scheduler. Missed cards loop back within this session; nothing touches your persistent spaced-repetition schedule. Cards drop out once you’ve rated them Good twice in a row (or Easy once). Great the night before an exam.

Progress bar segments

The three-tone bar on the home page decomposes coverage into what you actually know versus what still needs work.

• Mastered - in FSRS's Review state with zero lapses. You've reliably recalled these.
• Needs review - seen but not yet stable. Learning, relearning, or previously lapsed cards.
• New - cards you haven't touched yet.

Keyboard

Works anywhere on the review page - no need to click into the card first.

Study tips

• Prefer Good over Easy for most cards. Save Easy for cards you'd bet on getting right in a year.
• If you're uncertain, hit Hard, not Good - the algorithm needs to know when a card is on the edge.
• Read the linked note on the Knowledge base page when a card confuses you. Cards are the drill; notes are the context.
• Come back daily. Skipping a day isn't a disaster, but the schedule assumes roughly consistent effort.