when I first started with baitcasters back in the early 90s(back home in Oklahoma) it was winter too, so I actually set up a hat in the corner and practiced flipping & pitching a jig into it in the living room! That will teach you how to thumb your spool to avoid backlashes, all without making big casts that might tie you up in a big bird's nest before you get used to the technique. That way, when spring comes, you'll be ready!
The way I was taught is to put a lure on(say a 3/8oz spinnerbait or jig) and to adjust the spool tension so that when you hold it straight out and push your button, the lure will lower smoothly to the ground and stop when it touches. This will obviously take some experimentation... The spool will spin faster with a standard cast of course, but that's where your thumb comes in. LOL
Most people new to using baitcasting reels make the mistake of trying to throw it too hard - that's where 90% of backlashes come from, in my opinion. Once you get it down, your lure is gonna make a little sideways question mark shape as it shoots out from your rod tip. And realistically, in most(not all) freshwater lure casting situations, your casts are gonna be maybe 50 feet or less, so accuracy & quiet presentation are more important than distance.
While I use both spinning and baicasters, depending on the situation I am faced with, I love my Abu Garcia Ambassadeur 5000.
*edit: I've also got my eye on a Pfleuger Criterion rod-n-reel combo I saw at Dick's Sporting Goods...