I would recommend a tactile keyboard.
Everyone knows that I love my ancient IBM iron and have a large desk to accommodate an aircraft carrier, but I believe that tactile feedback is necessary to signal the brain that contact has been made.
Alps switches make contact high up, and might be even better if/when you learned to not bottom out.
IBM Model M/Fs are built to last for the long haul, and Unicomps give you similar construction in a modern frame, with native USB and warranties, for very reasonable prices (ie <$100 delivered).
I prefer a pure standard-ANSI full-sized (or larger!) layout, and I recommend that you stay with a conventional keyboard unless you can be certain of using your daily driver 98% of the time without undue distraction.
If you are typing words almost exclusively, and numbers are rarely involved, consider ditching the numpad for a smaller frame.
However, if numbers are a significant proportion of your work, a numpad is essential and very efficient.
Personally, if and when I retire and no longer have to worry with large numbers of numbers on a daily basis, I will seriously consider giving up the numpad and I may move to a Colemak layout. Qwerty is the status quo, but other layouts probably offer worthwhile rewards in speed and comfort.
PS - when my kids were learning to type, their teacher recommended typing with a black handkerchief over the hands.
cheap, easy, instantly removable