Yeah Ian, I've followed Grudd's tute so that it compliments it so that it's easier to follow, it could be standalone but I wouldn't recommend it as there's some things you need to know by reading or hearing about them. If I were to do a standalone tute I'd add a voiceover walk-through.
I've always turned off backfacing because otherwise it'd select too many polys, don't know of any other way to do that step, and I've learnt something new about the materials in viewport as well
Thanks for taking a look at it, I'm still much the 3d novice.