I've been giving myself my own haircut the last 2-3 years. Just take the old wahl clipper, #1 guard, adjust it half way up, and shave. The really challenging thing I have yet to master is lining my neck up so its even and cleaning it up. That involves double mirrors and a lot of practice.
Me too. I don't put a line in the back and just make it tapered which is easy to do with a Wahl without a comb guide. A line which in the U.K. we used to call a "Boston" or "Square Neck" is old hat these days anyway.