Kaplan 20 Minute Workout - free to use and features good explanations
Problem Solving Questions - a collection of 50 tough questions
SC - learn through these helpful videos
Permutations and Combinations - an ebook by The Delta Course
690 (Q48, V36) - what I should have done differently
740 (Q45, V47) - are adcoms expecting lawyers to have a higher quant score?
TOEFL - everything you need to prepare for the test
TOEFL and IELTS - how do the two tests differ?
TOEFL - speaking and writing templates
GRE prep - how to build your vocabulary