> This program should have a special mode for programmers who need to learn the !@#$%^&*()-=[]{}\| keys.

I thought so too, so I wrote one: https://github.com/codesections/gtypist_programming_characte...

(I submitted it upstream, but the pace of development lately hasn't been all that fast)

I can recommend this: https://wwwtyro.github.io/keyzen/

Can’t find a reference, but i think it does. I used in the past year for that purpose exactly.

Also, checkout typing.io which has lessons based on open source code.