I've built a few. Sheldon brown is a great step by step. Just take your time and maybe have someone check them over when you're done if you haven't trued a lot of wheels. I had trued hundreds by the time I tried building so it wasn't as hard for me to get tension figured out as it would be for someone who is new to twisting nipples.

P.S. Tensionmeters are really not necessary. Nice, but not required.