I learned it by getting an a3 sized piece of light cardboard and a bit of string, hanging the cardboard around your neck so that it blocks the view of the keyboard, and then get a tool like https://klavaro.sourceforge.io/en/index.html for training (In school we used TippFix, an ancient Dos-based tool. Because this was a Computer Science School and we all were lazy fucks back then, someone in our class created a TSR Program which allowed people to simple hold Alt-Ctrl-LShift and it typed automatically and towards the end of the graded lessons we simply made 2 or 3 typos on purpose for plausible deniability, buy you also could simply edit the plain text files to contain rows consisting of a single letter. Made all lessons a lot quicker, which meant we could return to playing Command & Conquer, Nethack or MUDs sooner lol)