Harry Potter and the Sorcerer's Stone

So, in anticipation of the final Harry Potter book coming out this summer, I decided to re-read all of the Harry Potter books as preparation. On second reading, it's somewhat obvious Rowling was only really concerned with world-building in this one. The plot seems fairly minor compared to what comes in later books, and the characters all seem to be archetypes, rather than fully fleshed out characters. Still, good for what it does, I suppose.