An electric smoker is like a first bike with training wheels. If you get the bug you will want to move onto other types of smokers.
Start with a pork butt and a store bought rub. Unless you leave too short/long almost impossible to ruin.
Get a good book with recipes and techniques. I tell people to start with the Dinosaur BBQ book.
Enjoy the new hobby. Like anything, you will get out of it what you put into it.