Oh yes! So many terms to learn, since the development of p2p is mostly in the vocabulary of the developers. Still, you've come a long way seeing how long your question list was.

Best wishes with whatever you try next--or just forget about the troubles and use whatever you can.

btw, magnets sound complex, but all they really are is link to a file. Unlike a link to a Web Page, magnets link to a file shared by, say, LimeWire.

See this link http://www.magnetdb.com/

(I list a little test magnet there--I'd like to get to the point where I can just email magnet links to my friends)