The trick to reading IMO is to be able to quickly comprehend what is presented in front of you, and write a few words about each paragraph. Read a bit each day and you should be good to go. I got a 23 on the RC, for reference.
Bootcamp's suggestion of reading articles from Scientific American each day is great. It gets you into the mode of being presented something you (probably) don't want to read, and forces you to quickly go through it and see if you can maintain the main points in your head. Trick yourself into being interested in the content. It's significantly easier to retain information if you are interested in the topic.
As far as actual strategies for the section go, I'd look through these boards (in the DAT section), to see common strategies. Figure out what works best for you. Similar to ACT reading prep, different strategies work better for different people. I did "search and destroy", but wouldn't necessarily recommend that for everyone.