The person really committed to the mammoth target of scoring a 700+ will have to undergo a reincarnation process. Transformation of personality, attitude and character. The verbal skills to be developed on an initial level are :

1) Be an avid voracious reader and developing a sense of rearranging the read text as per standard Premise -> Facts -> Conclusion format.

2) Identifying the tone of the text written, author's severity and directness in claiming certain conclusion. The tone may be neutral, critical, subtle, circuitous etc.

3) Reading popular business related article in HBR, Economic Times. The variety of articles at www.thebrowser.com  and www.aldaily.com are really helpful in getting an idea of various new areas of literature, science and history.

4) Start noticing sentence formation in standard literature from editorials and business articles in Economic Times.

These are few preliminary tips before you hit the books and question types.

Hello Guys, One thing I have noticed in GMAT Critical Reasoning questions is that they need 100% of your attention while you solve them. Each word and it's usage means something, the real art is to know and anticipate why that word was used instead of other obvious choices. Knowing the obvious might be what we  call fundamentals in logic and reasoning. 

For GMAT Enthusiasts who feel that progressive improvisation is the key

This is a small initiative by me as a GMAT aspirant to commit to the goal and let others also join in discussion. This Blog will be updated with some questions and some tricks on a regular basis. My perception of the blog is to make potential candidate of the path they will have to be prepared for. Everyone is welcome to make this as informative as possible.