When did I get in to em- Partly from about 5, totally from about 17.
What got me in to it- Partly my brother and all his mental V8 and V12 things he was always building, but mostly TBH it was going in a mates modded Astra GTE 16v when I was about 17! It was mental, I was hooked
DIY skills from- my brother, getting ripped off by garages, and not having enough money to pay garages so buying a haynes manual and going for it myself.