The way I learned was simply be learning what each thing does, voltages, frequencies etc, take the time to find out what you are actualy doing when you change a setting makes it a lot easier.
The good thing about the Black edition PII's is that they have an unlcoked CPU multiplier, my PII x3 for instance is FSB 200 x 14(thats the multiplier) at stock, by simply whacking that up to 16, I get 3.2 GHz, most chips will do this at stock voltages or with a tiny increase.
My advice if you want to give it a go (only do it if you are 100% sure and actualy care about it, don't do it because you think you should) would be to purchase a new cooler, something simply like the Sunbeam Core Contact Freezer and have a whack at it, just stick the multiplier up a notch or 2, boot up and run Prim95 for a few hours and see if it's stable, if needed increase the CPU voltage a bit and so on and so forth, ask questions in the OCing forum as well, there are people much more clued in on the whole thing.
It's very hard to damage processors unless you WAY overdo the OC or put the volatges over their safe limites, the worst you will do witha dodgy OC when just increasing the CPU multiplier is have to reset the BIOS, which is both easy and a complete fix.
Again I can't stress enough there is no real "need" for you to OC, unless you have an interest in learning about it or really really want to do it, don't bother, it will just cause needless concern and cost money you don't need to spend.