Lone Wolf Gamebook Online Resource
Many years ago, I got into this book series called Lone Wolf. It's a Choose Your Own Adventure series that takes it to a much more in-depth level. Rather than the typical "Do you do this or this" situation, in these books you found items and weapons, fought monsters, collected gold and magic items and gained special powers. It was basically a pen and paper RPG with a book as the DM. I had nearly a dozen of these books by the time I grew out of them. It wasn't until a few years ago I thought back to how great the series was and tried to find something online where I could buy them again.
If you've never heard of Lone Wolf (and, sadly, I bet you haven't) I very much recommend you give them a look. If you're reading this blog, you've probably played a bunch of Choose Your Own Adventure books. Lone Wolf blows all of them out of the water. If not for me, than for yourself, read/play through the first book. You won't regret it.