Follow this link for a description of the California Critical Thinking Skills Tests (CCTST) Of the titles recommended below Building Thinking Skills Level 3 figural and verbal teach core analytical skills. If you've got doubts as to your ability then start there. Mind Benders are deductive logic puzzles. Red Herrings Mysteries teach inferential reasoning. Critical Thinking is a classic traditional critical course covering everything you need to know. While it can be used by a motivated individual it is designed as a discussion course.