you can use insane Bump 2.0 as an alternative to crasy bump, here is a thread about it:
http://blenderartists.org/forum/showthread.php?317041-Insane-Bump-2-0-overhauled-Crazy-bump-alternative
Kent Trammell
replied
I go over texture creation using Photoshop in these videos:
https://cgcookie.com/lesson/painting-the-feather-textures/
https://cgcookie.com/lesson/deriving-a-bump-map/