Trying to figure out which book comes next in the series? Visit these websites to find out, and while you're there, see what other series your favorite authors have written.
With NoveList, you can search for almost any book. If the book is part of a series, it will list the name of the series under the title of the book. Click on the series title, and it will show you all of the other books in that series and the order that they go in.