I bought a wreck for £50 and took the whole thing apart and re-built it. Learnt a lot along the way. However, that was a basic Mini many years ago....the Zed is a tad more sophisticated.
Learnt other stuff often through force of circumstances - eg. with the older Westfields you needed to research in depth where all the bits came from and what they did - it was as much an issue of correct part sourcing as knowing what bits went where.
After a few years of crawling under Caterham 7s and the like I seemed to have lost the inclination I just ask Abbey to do everything now