Ask your teammates where they go theirs, or stop bu the pro shop at the alleys you'll be bowling at. If you're in decent shape, you should get the maximum weight, 16 pounds (F=ma). Get something that will gives you a slight hook now with the type of surface that will work best on your lanes (pro shop should be able to help there as well) If/when you get good and want to have the ball hook more, it can be plugged and re-drilled (or you can keep it and get another).
One thing to watch for is bowing on Saturday afternoons for practice, then bowling in a league... Your hook may work just excellent (or even too much) on dry, weekend lanes, but won't do anything but slide into the 6/10 pin in league play(4/7 if your a southpaw). (The centers spread oil on the lanes and they can control exactly how much goes where. The more oil that's out there's the less your ball will hook). The high dollar pros have over 100 balls in trailers that they take with them if they can, all to use on different lane conditions.
I've seen some 300 games bowled, even seen some 800 series's bowled. The best was the phone call my youngest brother gave me on a Wednesday night couple years ago. (Kinda startled me that the phone rang late at night during the week like that) He had his games that he wanted to brag about... 300, 299, 279 for an 878 series, 5th highest ever in the the state of Pennsylvania! Both my brothers have bowled perfect games, 285 was the best I could do...
