Yes!
I started reading the Percy Jackson and the Olympians series last year. I didn't know if I would like it so I got the e-books first, but the story hooked me in almost immediately. I lost a ton of sleep for a few days, reading all five books one after the other. I have always loved Greek Mythology, so these books are so perfect for me.
The first series was so good I felt like Percy Jackson and the other demigods' stories didn't have to end after five books. I'm glad the author thought the same and went on to create the Heroes of Olympus series. The adventure begins again with The Lost Hero, yay! I decided not to get the e-books this time around and start building my Riordan library and get the actual books.