The quantitative part is easy but verbal section is most difficult one. Most of people lack in vocabulary so here i am going to help you to remember words.
The most common is you see a word try relate it to its root word for example audible comes from the root aud means to listen or something to do with ears. :) well if the root is not known then try to break words and try to get meaning. remember in GRE wt is unexpected is the answer.
You can start working with http://www.scribd.com/doc/6714160/Top-100-GRE-Words
http://www.graduateshotline.com/cgi-bin/test/onlinetest.cgi
http://www.infozee.com/tests/gre/wordlist/word_detail.php?char=a&word_id=A270
http://learnwordlist.com/Free-GRE-Tests/synonyms-antonyms-quiz-1.html
