Well as long as you know the address (url) of a place called GMATCLUB on the Internet. U don't necessarily have to squander money on preparation resources.
There is a pool of information on this forum. For both Quant and Verbal.
Quant: Try and follow bunuel. He has been a guiding angel for anyone and everyone. Practice the quant questions for numerous topics highlighted in his signature.
Verbal: Here there are many users who have contributed to the success of the verbal section. Try to follow Mr. Mike (
magoosh), Souvik, Carcass, and many other users have tons of information highlighted in their respective signatures to guide the students. Not to mention bb (founder gmat club) he has loads of uploads on various sections in verbal namely, RC, CR, and SC.
You follow the above. And go back on your tests, analysing, revising, and working on your key areas of concern, starting from the first till last test, and I don't think you would need any more help with regard to resources.
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