Wow boy, slow down there a notch! Learning takes time, and you sound like someone who'd like to learn this things in a couple of days.
Some people need months to actually be skilled enough in a app (Like zbrush) to properly implement them into their workflow.
So, with all due the respect, suck it up, buy the into to ZBrush tutorials at gnomon or eat3d and get on learning.
I'm pretty sure we'll be here if you have any questions along the way, but if you come here looking for an injection of knowledge, I doubt you'll find any sympathy around these parts, everything takes time, don't rush it.