it’s been a few decades, but I learned on manuals.
There was a time that I actually hit more than 100wpm on them.
In grad school, I found out that Korean students watching me type in our computer room referred to me as “the machine gun”, and questioned whether I was actually typing anything. At one point, I turned and held a conversation with a couple without slowing.down . . .
One quarter in college, I was done, and a friend with whom I was supposed to go out was picking his way through, typing at his computer keyboard. I finally told him to get out of the way so I could type. As my eyelids got heavy, I handed it to him to read to me.
It seems I eventually fell asleep, and would type what they read, but was unresponsive to questions . . .
As a young lawyer, I found that I could type faster than I could dictate . . . so rather than recording for the secretaries, I typed and gave it to them to clean and format . . .