there are tons of foam roller exercises and also many different philosophies about them. A search on YouTube and Google will give you more information than you can imagine,
You do not mention why you look for foam roller exercises. As I mentioned there are different philosophies on what roller to use (hard or soft) and how to use them (eg. self-myofascial release (SMR), the MELT Method, and pilates with a roller).
I just posted Foam roller week ago 2min, clip on YT WHY FOAM ROLL?with some slides on How, WHY, BENEFITS,CONTRAINDICATION etc.. check it out hope it helps