I'll post up how I grind, so I get a nice sharp, even grind. :turned:
1) Hold the axle of the wheel in a Vice or your Frame.
2) Spin the wheel Clockwise.
3) Put the grinder on the right hand side of the wheel, let it bounce about a bit so what you get a nice deep grind (Y)
4) After that you should have a nice sharp grind.
5) Go ride! :)
I'll do a diagram if anyone wants me to? ;)