I've created an Amazon store for the Science Word Geek. I love books: picking them out, buying them, reading them. I hope people can find books in the store that they will learn from and enjoy.
However, I know that you can't buy every book you want to read, for a variety of reasons: money is not unlimited, and some books are out of print. Therefore, I've also made a reading list with links to Worldcat that will tell you whether a library near you has each book. In addition, Google Books has some older books that are no longer under copyright protection (particularly journals written by scientific explorers in the field), and I've listed a few of them for you to download for free and enjoy.