Had my cam chain done but...

[His Dudeness]

That's true if you make a mistake it could blow itself to bits so as a bare minimum you'd need enough experience and patience to be able to read and follow a manual accurately step by step. You'd also need enough experience to know when things don't feel right and you're about to break or cross thread things which you only really get from breaking a few things :lol You'd need a decent size shed or garage to lay the stuff out in. You'd need a few specific tools beyond the basic tool set like low range torque wrench, pullers, holders, you'd want a compression tester and probably some more tools that I can't think of. You'd need a full gasket set. You might want to look at replacing bearings and seals while you in there too. It'd add up pretty quickly. You're not going to get an idiots guide to doing it because an idiot wouldn't have a hope of getting it right. Plenty of very intelligent people wouldn't be able to do it either. I think it comes down to whether you've got a bit of a mechanical head or not.