Dude, why not get yourself on a mechanics course at your local college  
  
I can't for the life of me understand what the hell you are thinking  
Spend £s on a shed, strip it down then rebuild it, is that just for knowledge? Buy a zed workshop manual, cos what you learn stripping a shed won't necessarily be the same on a zed. 
  
Anyway, what do you want to be able to do? Are you modding a zed mechanically?  
  
I don't get it sorry