Buy an old car or motorcycle which has service data available to the consumer and uses commonly available parts. Start by learning how to change all the fluids, then start replacing wear items and making repairs.

Some good learning resources:

- Honda Common Service Manual (general motorcycle repair)

- Haynes, Clymer, or official service data for your vehicle

- ChrisFix on YouTube

- Revzilla's The Shop Manual (and its precursor, Motorcyclist's MC Garage)

- The forum or subreddit for your vehicle