Click on these links to search for any Young Adult series by author, title or series name
2. GoodReads
This is a free site, and you do not have to sign up to use it. It is extremely comprehensive and will include not only the order, but brief summaries and reviews by readers.
This is a free site, and you do not have to sign up to use it. It is extremely comprehensive and will include not only the order, but brief summaries and reviews by readers.