I disagree completely. Learn to shoot manual first. Maybe I'm just old school. I learned to shoot on a Yashica FX-2000. This was a film camera, no chimping allowed. I think shooting av or tv is just going to confuse the issue because you are involving automation. I also disagree with you saying you would never use servo. But then in the next sentence you say to use it if the subject is moving.
My advice is to learn to use manual. Start I'm the house with a static subject in one shot mode, maybe even on a tripod. (Use one shot for objects that are not moving and si servo for subjects that are moving). Pick an aperture you want to use and a shutter speed and iso. If I'm shooting something indoors that is not moving. I would try to shoot at the lowest iso for the given aperture I wanted to use, and let the shutter speed fall where it may. This is if using a tripod. If not you need to use a reasonable shutter speed after setting aperture and let iso kind of fall where it may. It's a balancing act. But you more or less get to choose how you want to balance. You'll never understand what's going on if you flip it to av or tv, or even auto iso. Do you want to take snapshots or learn photography? This is a serious non-offensive question. If It's the former, disregard everything I wrote. If it's the latter, I would again, use M and go from there. Once you learn manual, you will fully understand the rest and can use automation along the way. Also, pick up a book on learning exposure.
I'm sorry, but this comes off as pretentious to me. Everyone is obviously going to have their own opinion, but saying that shooting in Av makes you learn to take nothing but snapshots is the most ridiculous load of malarkey I've heard in a while. How would removing one or two variables at a time while learning photography be more confusing? I really don't follow that logic. When you learn Math in school they don't drop you straight into algebra in first grade, first comes counting, addition, subtraction, etc. I unfortunately listened to "old school" people like you when I first started out and it slowed my learning process, once I ventured out to learn what the other modes did and how they worked and started using them it was a lot easier for me to understand what each setting was doing without losing potential good captures due to fideling with settings I didn't quite have the grasp on yet.
And for the Servo question, if memory serves right don't Canon's have 3 focus modes (single shot, Servo and AI servo)? I was pretty certain that AI Servo is the mode that automatically switches between single shot and Servo when it detects motion... that's the mode I was recommending not to use since in my experience it's less accurate than just choosing the focus mode based on the subject. I wasn't saying not to use Servo.