Just to butt in with my 2c...
You seem to be overly worried about making mistakes. Don't be. It's a cliche, but everyone makes mistakes. Another true cliche is that you learn from making mistakes.
If you buy fully auto-everything, all you are going to learn is how to frame your shots. You'll never learn what massively overexposed skies look like, or what strange accidental choices in focusing can do for you.
"What happens if I do this?" is a useful thing to ask yourself when you are learning, and the opportunities to ask that become less common the more automatic your equipment is, because it makes all those decisions for you.
Don't worry about mistakes. You WILL make them, and some of them will turn out to be way more interesting than the things you were actually trying to do.