This is super useful. Among other things it has a chronological list of Wodehouse's books with a short one-half to one page synopsis of each. It's going to be a big help deciding which I want to read.
This is a book that I recommend to every fan or potential fun, erm, fan of Wodehouse. It's an excellent guide to Wodehouse's work, including a biography, summaries of all of his novels and great insight into the characters, (and they are characters), including his greatest creations, Jeeves & Wooster. A classic in its own right.