Spend the school year challenging yourself academically and read as much as possible to help prepare. The PSAT includes the same types of multiple choice questions as the SATs.
Practice: Take a wide selection of academic courses and read widely; Enroll in the most challenging courses; Get involved in trouble solving activities through clubs, hobbies, etc.
Prepare/During Testing: Take practice tests; Learn directions for each section though practice tests; Take your time; Don't feel you have to answer every question; Work steadily and don't focus too much time on any question; USe educated guessing and eliminate at least one answer with multiple choice
Educated Guessing: This is when you can eliminate 1 or 2 answers from multiple choice as being completely wrong.
Random Guessing: This is when you have no idea of the answer. Don't waste time on these questions, move on to the next