I also highly recommend reading newspaper articles - most major US papers have quite clear style and vocabulary, and the events they are describing are familiar. similarly, you have hobbies or interests (technology, fashion, movies, sports, etc.), news sites will give you information that will be easier to comprehend. (I struggle through Le Monde on occasion. it's good for practicing reading out loud, too. ^_^)
most importantly, reading an article or two is an easy daily habit, while reading a whole book can become more of a chore than a pleasure.