I would suggest sticking to a spinning rod and reel combo, mainly because you don't want to be overloaded with having to learn how to use a baitcaster in addition to learning about lure, line, and color selection. Once you have a pretty good understanding of those things, then start focusing on getting a better rod and reel. Spinning reels (as you know from trout fishing) are fairly easy to work, so they will be one thing less to worry about. Just be sure to have your drag set nicely to your line test weight and rod strength. Also, stick with smaller lures for now. Like 6" worms and smaller sized crankbaits should work fine. However, since you are fishing in a creek and river, rocky areas like that should be fished with smaller Jigs, In-Line Spinners, and texas-rigged plastics. I am not familiar with either bodies of water but that is the gist of rocky creek and river fishing. If you can, try to find a local pond and practice a little.
Good luck!