Free downloads

At www.mba.com you can download a lot of useful information and stuff. Just register an get for example the following:

1) GMAT Preparation Software:

A 15-question practice section for each type of GMAT® question, with answers and explanations for each question
2 full-length computer adaptive practice tests with answers (detailed explanations of answers are not included)
Accurate computing of Verbal and Quantitative scores, which you can use to judge how prepared you are for the actual GMAT® exam

2) GMAT Tutorials