Very nice. The only thing I miss is a short description of map locales such as Halith Vorn and the villages.

This is exactly what old school is to me. Except, of course, the modern and engaging layout. Besides, it's free, so check for yourself!

This is just a nearly systemless list of spells, not worth 10$ especially if you already own any book of spells for any game. All the effort to integrate it in your game is yours to make, so I feel it is nearly worthless.