The various forums, manuals and supplier websites have assisted with helpful information to maintain my own cars.
Keep file for each using Google Drive.
I’ve bought a few “basket cases” over the years, just for interest. Charades, Applause, and a few Audi Quattros too.
Repaired things like timing belt kits, head gaskets, rings and bearings, radiators, turbo replacement, exhaust, brakes, replaced suspensions, wheel bearings, panel beating, paint, interior trim and upholstery, head linings, car audio upgrades
Daihatsu G102 1.3I 16V 5 Speed Manual bought new. Sold in 2015 with 500,000km!