During the apprenticeship our instructor always wanted us to practice 10-finger typing together. A good idea, because I believe that if you really master this skill, you can put the words (or the code) you think about on the screen with an incredible speed. We used to do this with the program “TIPP10", which is available both as an offline and an online version.
Since I don’t type slowly, but not with ten fingers either, but with my own version of a mishmash, I try to practice 10-finger typing again. I think that it requires a lot of patience, because if you are not that fit and still half in your own system, you make a lot more mistakes and because of all the corrections you need much longer. But this time I try to hang on, not to give up and to be able to type really fast in the end.