Scored 530 on my first GMAT, need advice and way forward!

Hi all,

I took my first GMAT 2 days ago and scored 530 (Q37, V26). Although I was highly disappointed I knew that I had not put much efforts to score 700+

Some of the mistake that I did while preparing for the GMAT and while taking the real exam:

1) Never gave mock tests, only gave a mock test before studying for GMAT on Gmat prep software and scored 450.
2) Did not solve official guide questions except for few. After reading concepts from Manhattan, I solved only the practice exercise questions that are available after every chapter.
3) I knew that my quants section on the real GMAT was going well, although In the last one minute I had 5 questions left and I marked them randomly. I think this is the main reason for my low Quant score.
4) My lack of practice in verbal made me realize that I was not doing well on the exam. Also, in last one minute I had 6 questions left which I marked randomly.

Guys, I think I will be able to improve my quant score but I am a bit concerned about verbal preparation.

I studied Sentence correction from Manhattan and made my own notes for Grammar rules. For CR, I took the E-gmat Course.

Now, for verbal should i again study the concepts from some other book or just keep practicing questions and keep analyzing them?

What should be my overall way forward for a 700+ GMAT score ?

Hope springs eternal

Thanks,
Harish