Hey Simon,
I'm by no means a mechanic but I've done the vast majority of all the servicing on the last few bikes I've owned, only thing I've not done myself yet is a valve clearance check, but I will probably be doing it when it comes around on the Fazer!
Depending on what you want doing/to learn, I could probably give you a hand - I haven't ever worked on the Fazer 600 specifically before though, but the basic principles will be the same for any bike!
If you haven't already got one, I'd definitely recomend getting a Haynes manual, using one of those you could literally strip and rebuild the bike if you so wanted, they're very good indeed