Just read your re-edited post, just a little thought on the matter on your part might help, if you know what they do, then think about their applications, or maybe give them a test, rarther than wanting a hand in hand walkthrough of everything.

If you want to hide selections then select the faces that are not mapped in the uv texture editor then goto panels view selected, I would move the comepleted parts outside of the 1:1 area just for ease and then move them back in when everythings finished.