The SAT and the ACT - links to help you prepare...
The ACT Student Page - click on test prep link, inlcudes online registration, and more.
College Board: SAT Program - includes calendars, online registration, preparation advise, and more!
Student Market - a comprehensive article about the SAT
Family Education.com - information about standardized tests including the SAT
Educational Testing Service - click on "students" to get information about standardized tests including the SAT