Each jig has it's place, but I find myself using a flipping jig 90% of the time. It's the most versatile jig if you ask me.Fin Junkie Flipping Jig
This jig is great for anything and everything. It's good for grass, docks, timber, rocks, you name it. It's a high quality jig and there's a color out there that will suit you well anywhere you go. This would be my first choice as a beginner. Jewel Bait Eakins Jig
A finesse jig can be fished in the same places as a flipping jig, but it's more suited for finicky fish and high pressured lakes. It's nice, subtle size is great for imitating small crawfish or bluegill. Any time when you aren't getting a bite, tie one of these on. Revenge Swim Jigs
A swim jig is best suited for when you're trying to imitate a swimming craw, bluegill, or shad. It's great swimming around docks, timber, grass, pads, anything you can find. Just cast it out and reel it in. Every now and then I like to give the bait a little "pops" with the rod. This swim jig is a great choice for you and it's made in the USA. Dandy Baits Football Jig
A football jig is a fantastic choice for when you need to keep in contact with the bottom in deep water. This particular jig is especially great at coming through rocky terrain easily. This is your best choice for offshore fishing during the Winter and Summer. Lotso f sizes and colors to choose from with this jig.
I suggest you pick one of each as it's hard to pick just one for all conditions. If I HAD to pick just one, it'd be a flipping jig. Stick with a 3/8 or 1/2 ounce size in green pumpkin or black/blue and you'll quickly build a lot of confidence.