Obtain published books that contain tests relevant to the style and questions asked on IQ tests. Suggested books are "Challenge Your Brain Math & Logic Puzzles," "Maximize Your IQ," and "The Book of IQ Tests: 25 Self-Scoring Quizzes to Sharpen Your Mind."
Note the areas that show a weakness. Test questions will be divided into sections: verbal, mathematical, spatial, visual, classification, logic and pattern recognition.
Seek help from a tutor in low performance areas. A tutor can coach you to improve math, verbal skills and patterns.
Practice test questions repeatedly at home and learn to anticipate the types of questions that will be on IQ tests.