Reddit reviews The Real Blues Book

Here is the mobile version of your link

I'd just buy a blues fake book (maybe http://www.amazon.com/Real-Blues-Book-Leonard-Corp/dp/1423404513/ref=sr_1_2?ie=UTF8&qid=1426142710&sr=8-2&keywords=blues+fake+book) then work at the songs in them. It'll be slow going at first trying to play the melody and chords at the same time, but you'll eventually get the hang of it and every song you learn will sound better than the last.

I'm not an expert but The Blues Real Book is probably a decent place to start. Those books tend to be easy to use and have a good selection of tunes (I'm used to the jazz ones, but assume much the same goes for the blues ones too).

Be aware that any lead sheet for a blues tune will only give you a skeleton of the song; you'll need to refer to recordings to flesh it out into a performance and get it to sound right. But this will get you started.