Go to TW's website (or basically any specialist store that sells tennis stuff) and check out those 3-pack bags. You wear them on one shoulder, which I think is what you're looking for.
There's no golden rule as to what constitutes a good racket. If you are happy with a $200 racket, then that's a good racket for you. Mind you, there are also string type and string tension to consider besides the racket itself (to which you should have a feel as your tennis experience expands).
Having said that, a light-weight, head-light balanced, "tweener" racket with reasonable amount of power should be the most suitable if you're not even sure you can take up tennis. Something like a Prince O3 Hybrid Shark / Hornet (versatile, and cheap) on TW's website. Or you could just go to a pro shop, tell them you're relatively new to the game and they'll probably give you some good recommendations too (although they may try to hard-sell you what they can't sell).