One piece of advice that I think is very important when reloading is to stay focused on the task at hand and not get distracted by the kids, pets, wife, TV, etc.
You need your reloading bench in a place where you can get away from it all so you can keep your attention directed on what you are doing so as not to double charge a case or try to prime a case that's already primed and so on.
Reloading is fun and rewarding but it can be dangerous if you don't pay attention!