This was big when I was learning and no one talks about it much anymore because they are too busy with complicated swing theories.
The first 1-2 feet of the back swing are the most important part of the swing…after setup and alignment which technically aren’t part of the swing.
In the first two feet of the swing, you want the butt end of the club to be pointed at your zipper, until your hands get past your right hip (left hip for left handed golfers).
(The 9 o’clock in next step is from a face on view of the golfer)
After the hands past the right hip, the butt end will transition to pointing at the golf ball when your left arm points at 9 on a clock.
All you have to do from here is rotate your body and not grab the club with your hands.
You don’t want to try and be too perfect on this and micromanage it. It is just a guide to see if you are using your arms and hands too much in the beginning of the takeaway.
If your arm swing or hands take over too much early in the takeaway, it is difficult to go up this path.