What a great charity! You benefit, others benefit - it's a win-win!
Simply go to the We Give Books site, choose a campaign (basically what organization you want books to be donated to), and start reading! There is a great selection of online books, and each time you and your child read a book, a book is donated to a child somewhere in the world, depending on your chosen organization! You can even read your favorites over and over again - and each time another book donated! Can't beat that!
So - what are you waiting for? Get to reading!