I was looking up some things on Google Books, and I came across some pretty neat things-- which you can download for free.
What I did was, search for the name "Chrysostom," under Full for book form, and I got these
results. They include some collections of St. John's homilies, and a few books on his life. They are mostly available in epub and pdf form, so if you'd like, you may put them on your computer or an e-reader. These may also be available from the bookstore websites, but I thought I'd save you a few bucks.