B4 beginners guide

[Hitman]

Hi guys, I was just hoping you can help me find a nice simple guide to "servicing" a B4.1? I need to take set of tyres off of some wheels and put a different set on and change the springs on both my front and rear shocks. I'm getting to ripps with it but I dont want to do something stupid and damage any on the parts I have unesscessarily.

Thanks