For years now, I've done more saltwater fishing than fresh. I love both. I do find that my casting skills get a little rusty sometimes because in saltwater you don't cast out as much. You just drop your line straight down in most cases. You can practice casting in your
yard by tying on only a light weight without a hook. Lots of panfish like to lay near the edges of streams and lakes, or against structures or in brushpiles. It helps to have good aim to not end up with your lure stuck in a tree branch that reaches over the water. I've been there!
For your area, check out the
2017 Illinois Fishing Forecast from Game and Fish Magazine.
Also, make sure you are following the rules of
The Dept of Natural Resources. Some fish have to be of a certain size in order to keep and some are limited in the number of fish you can keep. Purchase a fishing license and keep it renewed. Each year check the regulations because they love changing them on you. You don't want to be fined. Government...has to have a hand in everything.