Free, independent
Free practice to build real skill
Build real skill through practice — exams, Brain games, and more paths ahead. Free core forever.
Where to go
Four ways in. The full catalog lives under Practice.
How it works
Choose a practice path
Open Practice and choose a category — exams today, Brain for daily drills, and more paths as we add them.
Train across paths
Train the way that fits: untimed banks, timed mocks, or Brain clears. Mix paths; the free core stays open.
Track progress
Follow Crane standings on one leaderboard and pick up where you left off in Account.
What stays free
Every question in every bank is free, with unlimited practice. Timed mocks follow a weekly free quota; registered learners also spend Books when entitlements are on (earn Books via Brain games or by passing a timed mock). Support via Buy Me a Coffee unlocks a few conveniences and helps keep the site running.
CyberSkill is an independent practice-exam resource and is neither affiliated with, nor authorized, sponsored, or approved by, Anthropic, PBC.