I inherited a copy of the 6th edition (2003) from a medical student a few years ahead of me. I didn't crack the book open until summer of 4th year, only to find out that there is some helpful information regarding specialty selection and pointers for the early years of med school, too.
Iverson provides a lot of helpful information here, and it's probably best to take it in chunks. Some of it is fairly outdated at this point (10 years later), but seeing as the latest edition came out earlier this year I imagine those issues are resolved.
Great resource for med students. You've probably never even heard of the book otherwise.
Rating: G, nothing offensive.