Got 690 on the prep test on MBA.com, how to proceed?

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Newbie | Next Rank: 10 Posts
Posts: 5
Joined: Sat Nov 16, 2013 10:47 pm
Hi,
I just started my prep for GMAT. I am planning to give the exam in April/May 2015. I got 690 on the 1st prep test. 48 Quant, 34 Verbal. How should I proceed from here? I faced maximum difficulty in sentence correction. Is joining a prep institute recommended or is self study sufficient?