Crock pots are incredible. If you run across a sale on meat and want to stock up, you can load it all into a crockpot and let it cook then package in 1 lb amounts in ziplocs in the freezer. I have stuffed mine FULL of ground beef and it cooked perfectly overnight, ditto with the chicken breasts (boneless or bone in). Then you have meat cooked and ready to go for fast meals anytime.
The liners are incredible for cleanup. Well worth the cost - and I am a super tightwad!
For some easy meals, search the archive here. Pinterest also can lead you to loads of crock pot recipes (search crockpot recipes). You can also find the 'Fix it and Forget It" cookbook at used bookstores and online fairly cheaply.