If you have an iPhone, this is a really awesome application that can you help you with your test prep.
When I started studying for the GMAT, I was looking for a flash card solution to help me study, and I stumbled upon gFlashLite (Free) and gFlashPro (US$4.99)
This is integrated with Google Spreadsheets. If you create a two column spreadsheet with questions on the left and answers on the right. Then you can download the spreadsheets thru gFlash and it will convert it into a set of flash cards. This is both cost effective (Google Spreadsheets is free) AND much much faster than making your own flashcards by hand. It is also easier to organize since it is stored completely in your phone.
I would go thru my review materials and come up with various flash cards from them. Writing the flashcards into Google Spreadsheets helped me commit the content to memory. Then whenever I had a free moment I would flip out my phone and do a set.
I highly recommend this. This solution, in addition to the GMAT Club iPhone app turned my iPhone from a communication device into a killer GMAT prep device.