Thank you! I'll begin with a traditional key, and listening.
My keyboard is an IBM Model F [1] through an interface from Hasgstrom Electronics. It has the Control key and Escape key in the old places, essential for vi.
[1] I bought the Model F from http://www.clickykeyboards.com/
[2] Pre-PC/AT keyboards won't work directly with PC/2 or USB adapters; you need a protocol converter from http://www.hagstromelectronics.com/products/ke_xtusb.html
Start with the straight key, and at some point you'll be able to hear faster than you can comfortably send for long periods, and start wondering what technology would allow you to send quicker... that's the time to start looking at bugs and paddles and electronic keyers and memory keyers and morse keyboards and all that kind of stuff.
Maybe bad analogy time is learn to type on a classic traditional keyboard (model M?), then start looking at the infinite array of ergonomic keyboards.