Free Online Course / Study Material / Resources

http://www.testprepreview.com/gmat_practice.htm
http://examrace.com/GMATstudymaterial.aspx
http://www.beatthegmat.com/

Tips and Strategies

http://www.platinumgmat.com/about_gmat/gmat_tips_strategy
http://www.accepted.com/mba/top5gmat.aspx
http://www.west.net/~stewart/gmat/gm_qt.htm
http://www.gmathacks.com/main/category-contents.html
http://www.studyguidezone.com/pdfs/gmatteststudyguide.pdf

GMAT Question of the Day

http://www.takegmat.com/GMAT-question-of-the-day.php

Free Practice Tests

http://www.gmattutor.com/links.html
http://www.syvum.com/gmat/
http://www.gmatbuster.org/
http://www.getsmartfirst.com/GMAT_Test.html
http://gmat.jumbotests.com/

Format & Registration / Books & Coaching / Eligibility / Validity / PreparationTime

http://www.csqrl.com/
http://www.infozee.com/tests/gmat/
Everyone is eligible / Test scores valid for 5 years / Atleast 3-4 months before test date.

Minimum Score Requirements

Some schools require minimum scores in all or certain sections of the GMAT.Know the minimum requirement at a particular school, if one exists, so you only apply to schools you are qualified.
http://www.majortests.com/gmat/gmat-scores.php

FAQ / MBA College Finder

http://www.geebeeworld.com/FAQ/GMAT_FAQ.htm
http://mba.graduateshotline.com/cf.html

How to prepare for GMAT / Improving Score

http://businessmajors.about.com/od/satgmatpreparation/ht/HowToBeatGMAT.htm
http://www.ehow.com/how_2050890_improve-gmat-score.html