Wow! Some broad questions that you could get a thousand different answers to. ;D Set ups? Depending on where you live, I'd head down to your nearest shop and let them know what your after. If the pawn shop idea is in your mind, then IMHO you'd be better off going to a shop for a set up. You get piece of mind with a warranty on rod and reel, in case anything should happen. Most shops will put together a package set up for you depending on your budget. Some starting around $150 for the set up, and you may even spring a deal for the line too. I'd say for $300 you could walk away with a set up and matching multi tip line. Dragon Fly rod and reel combos would be a good entry level set up as an example of what to look for.
Getting the hang of it? It's all about time and practice, and most importantly patience. The more time put in, then the quicker you get the hang of it. The less time spent, then the longer it may take. Most shops will be able to point you in the right direction for instructional books and videos, and maybe a casting lesson or two if $$$ allows.
Fly fishing is all about the artificial flys, and nothing else. IMO anything but a fly, tossed off the end of a fly rod would be out right sacrilege. ;D Wool ties would be acceptable though. ;D
Happy shopping, keep us updated.
Finder :cheers: