Drill the drawing set
Every question here points at a drawing you can open, pan, zoom and measure. A wrong click is told what it actually hit, a wrong number is told the right one, and every answer carries the reasoning and the convention it comes from. Nothing you answer leaves this browser.
The daily drill
Ten items, stratified so every lesson with questions in it is represented, seeded by the date so it is the same drill for everybody, and new at midnight UTC. Free forever, whether or not you ever buy anything.
Drill one lesson
Every item filed under that lesson, in a shuffled order.
Lessons 1, 2, 3 drill without limit on the free tier, and so does the daily drill of 10 items. Lessons 4 to 10 and per sheet drills are part of Premium. You have 10 capped items left today.
Drill one sheet
Every item that points at a single sheet, which is how you learn a sheet rather than a topic.
The sheet itself, the measure tool and the layer tray are free forever. A drill scoped to one sheet is part of Premium.
Where else to practise
A drill on one sheet starts from any sheet page, and a lesson drill starts from its lesson. The timed exam simulation is 40 items in 45 minutes, stratified the same way the daily drill is, and your progress record keeps the per lesson and per sheet accuracy this drill produces.