Technique details ⌨️🦖
Keep your hands low
Official manuals for touch typing would suggest to slightly lift your hands and hover them over the keyboard while typing. The wrists should rest on the table only in breaks between typing. I would say that this advice is 100% outdated and it only applied to the big and steep typewriter keyboards.
Today one can easily reach most of the keys without having to lift the hands from the table/laptop. So I would suggest to simply let your hands rest on the table/laptop most of the time. That will also encourage you to make the smallest possible movements with your fingers and to not involve your arms at all during typing.
Keep your fingers low
As mentioned above - try to make the smallest possible movements when typing. This will save you both time and energy.
Do not lift your fingers and hands high while typing. Slide them just above the keys and press with as little force as necessary. Firmly but without any strong impact. This will also help you to feel out where the keys are.
Also it is suggested to return your fingers to the home row position after every key press. This rule is good to follow while you are learning for the first time. But it's not a strict one and fingers of advanced typist flow over entire keyboard.
Worry about the wrists
Try not to bend your wrists too much. In general your hands should be aligned with your forearm.
This one is mostly for health reasons. Having your wrist bend for extended periods of time puts a lot of pressure on them and will result in carpal tunnel.
Having your hands and wrists and arms relaxed during typing is important. You will tens up when trying to type without looking for the first time but it should not become a strong habit and you should learn to be completely relaxed during typing as you improve.
Don't worry about the pinky fingers
When you search for the "touch typing" pictures on the web you will find diagrams showcasing which keys should be pressed by which fingers. And there are a lot of keys assigned to the pinky fingers.
Don't worry about that. You don't have to follow those diagrams. A lot of great and very fast typist do not use pinky fingers at all.
Yet I would encourage you to try using the pinky. It will stretch, develop dexterity and strength over time. But if that would bring you too much discomfort or would be a deal breaker then just use any other finger.
Don't worry about the details
The important part is to be consistent. Decide which keys to press with which finger and stick with it during practice to develop muscle memory. So the same goes for other fingers. If there is a key which you prefer to press with different finger than the diagram from the internet suggest just go ahead and do it your way.
And just try to make yourself comfortable on the keyboard. Do not tens up your hands during typing, relax your arms and move the fingers as little as it is necessary to press a key.