You can search on Youtube, there is a bunch of videos about the basic, and also with the sliders and the edit panel , you can figure alone 80% of the parameters easily. It's just need time, and trial and error learning. If you want to package them, and clean them ; it's a bit more complicated, and the best doc is probably the tips and trap summary of GrinGod 's blog :
vascobasque.wordpress.com/2013…He also has a deviantArt account if you want to 'watch' him :