According to what I have read I will need alot of practice since I was taught only the Thumb under method. I would like to learn the TO method so that I have more options but I really dont understand this fully from just reading. (wish I could afford a teacher). I was hoping that someone can word athis in a way that I will understand. Below seems confusing as to what they are saying. Especially this part (you cannot hold the 3 or 4 finger until the thumb passes over) what??? makes no sense to me. any iput is greatly appreciated

Here is what I read:

Now consider the RH, C major ascending scale. This is played 1231234,etc. In the TO method, the thumb is played just like the 3 and 4 fingers for the descending scale; i.e., over the 3 or 4 finger. However, you cannot hold the 3 or 4 finger until the thumb passes over because the thumb will collide with it; therefore, the 3 or 4 finger must be quickly moved away as the thumb comes down.

Not really over, just in the place of. Your thumb never really moves over your finger you want to turn on.