The best way to learn to fish with a jig is to only bring your jig rod and jigs!
You will learn how to fish a jig by catching fish with a jig. I know that sounds stupid but I tried fishing a jig MANNY times and would give up and fish something else.
First find several spots you know have fish. Don't try to learn how to fish a jig in "new" locations start with known places you've caught fish in before.
Let me be clear on this, If you catch fish within 6' of the shore that's were you need to learn to fish a jig.
Don't get me wrong a jig is the ultimate bait to catch the monsters out deep in the middle of the lake but that's not a good place to learn. Learn to catch the 16'' dinks that have better numbers then go target the big girls.
I'd start with a 1/2oz Green Pumpkin or a Black/Blue with a matching Rage crawl.