Where Can I Download “totally” Free Magic Trick Books?

I came to realize that magic seem to be quite attractive and create alot of curiousity and, I’m interested to learn these magic trick, i.e. David Blaine, Criss Angle, etc..
But i know, if i were to learn those, it’s quite dificult.. But do you know any weblink that i can download “FREE” simple magic books..
Appreciate your kind assistance on this..