Any books or any other kind of sources to improve reading practice.

Dear ramukaka,

I'm happy to respond. First of all, I will apologize for the delay. I don't know whether you read the posted announcements at the top of the thread. This subforum doesn't always get regular attention from those of us at Magoosh. In particular, my time was needed elsewhere during much of the past few months, so I wasn't on GMAT Club nearly as frequently as in the past.

First of all, I will recommend this post:
How to Improve Your GMAT Verbal Score

The GMAT tests RC and CR because real business people have to do a lot of reading and have to evaluate a lot of arguments every day in their jobs. I would say: start with what you know business people have to read. The Economist magazine is excellent, as are Bloomberg Businessweek and the Financial Times. Force yourself to read articles about issues in industries about which you know almost nothing.

The magazine Scientific American is very good for natural science articles. National Geographic of course has lovely pictures, but this is also a good source of information about other cultures.

Finally, social science journals and textbooks are excellent sources of reading. You may be able to find some at a nearby library.

In all of these, be on the lookout for arguments: the author may quote or describe the arguments of others, and the author may have his own argument as well. Always be thinking about these arguments all the GMAT CR questions--what is the assumption? what would strengthen/weaken the argument? what can we infer? what additional information would we need to evaluate the argument?

That's at least a start. Let me know if you have any more questions.

Mike