I downloaded Little Women by Louisa May Alcott from Overdrive. It was easy to do, but rather slow, since the book has 17 parts. I downloaded About Alice by Calvin Trillin from NetLibrary. This is a slight book so the download took no time at all. But I had to stop and create an account first. On the whole, I would say Overdrive is easier.
It was extremely easy to find the titles I was looking for in both of the services.