Overview
Quick practice
Every set is built new questions first, then ones you got wrong (least recently seen first), then a few you got right for reinforcement — and anything you answered in the last 12 hours is held back so you don't re-see it too soon.
Unfinished sessions
Practice by chapter
Tick any number of chapters, then Practice (a sized set) or Complete (every question in the selection, in random order).
Practice by topic
Cross-cutting themes and question styles. Pick any combination, then Practice or Complete.
Topics
Question types
Sections
A section counts as complete when you pass its completion test (). Confidence combines your accuracy and coverage.