The rear wheel on my Raleigh Grand Prix is grossly out of true. I've tried a bit of spoke-wrenching around but am aware of my lack of expertise. Basically, I have been using intuition but I have just about made the bike safely ride-able I hope).

Is there a good thread here, or an alternative website, that can be recommended as a tutorial for a newbie?

I know it's a skilled job but don't know how much I can trust my $$$ to any of the local bike shops..... Some might be good, but I just don't know.