There is no fixed strategy here in case of Reading Comprehension that works for all. That's why, it is important to spend some time in exploring different techniques to know which one works best for one. For example - some feel comfortable in making notes and some do not, some prefer quickly skimming over the paragraph first before reading the questions, some prefer spending stipulated amount of time in reading the passage and in making notes before attacking the passages and so on. You should read about these multiple strategies in Manhattan GMAT, Kaplan and come with a way that works best for you. So, the best suggestion would be to get into the habit of active reading on a regular basis if you are not doing it already. Try to spend an hour daily.
By Active reading, I mean, start getting involved with what you are reading. Ask questions - why is the author writing this piece ? what is the use of "this specific information" here, start making predictions into what you can expect next as you are reading etc. Fortunately, there are a few Journals/Publications that use GMAT Style writing and thus, it is very important to read articles from such sources to make our ears accustomed to the kind of reading we can expect test day. Some of the renowned sources include - Scientific American, The Economist, The Wall Street Journal, The New York Times, The New Yorker, phys.org, The Atlantic Monthly, Harvard Business Review, Bloomberg Businessweek, etc.
You can like the respective page of these publications on Facebook and thus, be rest assured to receive a few articles daily on your news feed. Also, please note that a few of these publications may require a subscription if you reach their allowed ' FREE Articles a week' limit.
Further RC Video Tutorial by Express Learning | Tips-n-Tricks for Non Native Speakers