I'm going to be interested in the responses you receive because crock pot cooking is something I'd like to do more of but my success has been less then desired.
Like you soups and chilies are fine. I also get good results with beans.
I've had less success with meats and more complicated recipies but I find the veggies are good and it's the meat where I find it lacking.
Cooking it too long is always an issue with crock pots. Especially if your following an older recipe. Modern crock pots cook at higher temps then older ones and I've found I needed to shorten cooking times. Even newer recipes seem to over cook the chow inside the pot if you follow the guidelines.
Add ingredients at times you feel they need to cook in relation to the other ingredients included. Your cooking experience with pots and pans should help you here.
The idea of tossing it all in a pot and forgetting about it until it's done is a good one but it really doesn't work that way. I'd love to put it all in the pot in the morning and have a fantastic meal ready at dinner time when I get home.
A crock pot is simply another tool in the kitchen and you'll need to experiment with it until it fits your needs.
Good luck with it.