If I could go back and talk to myself when I first began studying I would say this. Don't skimp on cost, but chances are a course will not be helpful if you want 700+.
Learn about the basics of the test, questions types, timing etc.
As for materials:
-I'd get the whole MGMAT series
to help you cover the basics and get your footing. It comes with the online questions and the adaptive CAT practice tests.
and verbal for extra practice on official questions.
-Pick up an LSAT "10 offical prep test" book for extra practice with difficult RC and CR.
-Become a regular on GC.com forum so you can eventually unlock access to the tests.
-Additionally you can pick up the MGMAT challenge set.
Very comprehensive, but thats just me.
My biggest tip is to start your studying with one of your strengths. For me that was RC/CR. When you work up your strengths and are confident that you'll do well in that one area first it helps build momentum in your studies to tackle your weaker areas. Also, if you do your weaker areas first you may begin to forget concepts as you move on to other things and get closer to the test.
hope it helps
G.T.L. - GMAT, Tanning, Laundry
Round 1: 05/12/10 handling-a-grenade-thesituation-s-official-debrief-94181.html
Round 2: 07/10/10 - This time it's personal.