Eager readers have another good reason to jump into the Kindle ecosystem: with Amazon's new Kindle First service, four books will be available for purchase exclusively on Amazon around one month ahead of their proper release date. Though multiple titles will be available each month, readers will only be able to choose one of them. But picking one up won't be a hard decision. Prime members will get their book for free, while everyone else can purchase theirs for just $1.99. You won't need to own a Kindle to read one either, as the ebooks will work in all of Amazon's Kindle apps too.

For its first month of Kindle First service, Amazon has chosen titles in genres spanning from romance to mystery. None of the books come directly from big name publishers, however, so while the service may be exciting, for now it seems unlikely that you'll be able to score the next J.K. Rowling novel ahead of the general public. Instead, Kindle First seems like a good way to please readers by stocking up their digital bookshelves. Though Amazon says that three of its four books this month come from best-selling authors, the program still appears to be a great way to give each title a bit of extra promotion before its proper release.