Ha how ironic that this was just mentioned in another thread! +1 to you sir!
Now with that said, this looks quite good and really broaches chess in a modern way in terms of learning. I sure have stacks of books that I wish were just software, mostly on studying chess tactics
I haven't tried it yet, but there's an app for "running" chess books, i.e. you can play the positions described in the book right in the app. No need to have a chess board. According to the site, there's a big list of books that have been converted to work for that app.
Now with that said, this looks quite good and really broaches chess in a modern way in terms of learning. I sure have stacks of books that I wish were just software, mostly on studying chess tactics