I would put this book somewhere between n4 and n3 level. It has some interesting passages (25 to be exact) for reading comprehension practice – most passages are observations of human nature – how certain colors are associated with boys and certain others with girls, how young moms behave in trains and so on. There’s even one on how marketeers invade one’s privacy. All passages are followed by questions based on the passage and a practice section for grammar points covered in the passage. You can hope to pick up interesting vocab such as “ikigai”, “niramekko suru” :-). And no.. there is no English meanings/explanations provided for anything – which is good in a way. After all in the actual exam the passages are bound to have words that you don’t know..but you still ignore those and try to get the overall meaning the passage is trying to convey, right?
The best way to attack the “reading comprehension” section in my view is to enjoy reading in Japanese – begin by choosing books that are slightly above your current level and read them in your free time. If you stick just to the book that you purchased for the JLPT exam, it would qualify as “studies” and might seem like a “chore” beyond a point. This is where books such as this one and this one come in handy.