I forgot to bring my books yesterday so I started to read an e-book sent by TOR books. The book "An Old Man's War" by John Scalzi tells of a future Earth where old people enlists to fight for Earth's colonies in return for being made young again. It's an interesting premise, and Mr. Scalzi's novel entertained me enough that I finished it in two days.
I would not have been able to read the book if not for the fact the TOR books have followed in Baen books footsteps and is giving away free e-books of some if its authors for readers to enjoy. I discovered David Weber and John Ringo from Baen's Free Library and I think I will be looking for Mr. Scalzi's novels from here on.