When I first learned to fly drones late last year, the guy at the LHS, told me for best control, to not use my thumbs on top of the sticks, but hold the sticks with my index finger and thumb, like I was "pinching a nipple" (his words not mine, but the visual has stuck). That I have finer control using two fingers. So 4 different quads/drones later, I still do it. Sure I have to move my fingers around to reach activate buttons, but since this is the only method I know, its not an issue.
I agree about starting out with a "beginner" drone. The beginner ones have next to no aids, So you have to learn fine control. I made 90% of my mistakes on that little thing so that when I moved to an AP drone, it was very easy to fly...