Welcome
Don't worry about Old Hickory lake as far as shallow just start around the dam area and learn dam to 5 miles up stream it will keep you busy and there is no fear of mistakes.

You will be working in Hendersonville so learn Drakes Creek.

(Red Buoy Means what it means all channels are marked well.)

Welcome aboard, if you're looking to troll for 'eyes and Muskie, Dale Hollow lake can't be beat.

Welcome to the forum and to TN. There a wealth of info here. The best part is how members will do their best to help answer any questions you ask.
Good Fishing to ya.

You are closer to Ky lake as said. Right now you can drive 30 minutes and put in Cuba Landing and load up on crappie in the Marina bay.
Or drive 45 minutes up to New Johnsonville Pebble Isle Marina and do the same thing.