I'm sharpening challenged as well, but I've managed to put two and two together.
For those that are interested, I shoot Magnus heads...both the cheapy two blades and the stingers. (I have some buzzcuts also, but I can't resharpen them all that well.)
Anyway, I've found that touching up the factory grind on the stingers is super easy using the Rada wheel sharpener. It only take 3 to 5 slow medium pressure strokes (with tip pointed down 45 degrees) and they're really sharp.
For the black 2 blades, I have better luck with the Accusharp. Again, doesn't take too many strokes and I'm in business.
Not sure why one works better than the other for me, but that's been my experience. Luckily both can be had for under $10