The one thing I struggle with is arrow keys and/or ctrl+arrow to go the end of the word or needing home/end to go to the end of the line. I don't want a non-standard programmed keyboard/layout, but it really slows things down when writing code.
Definitely, I was even going to pay for it, but I feel like I need to dedicate at least 30m to an hour a day for a month, and I just can't be bothered.
Also recommended: typelit.io, where you type books out.
For a small subscription you can upload your own books, convenient for bookclub/typing practice killing-two-birds efforts.
https://www.typelit.io/