If like that, become your own mechanic.
No need money, just need to fill own stomach and work on the car. Dirty or not, depends on how well you can prepare so you don't get oils on your hand.
Cheap? Definitely.
Interesting? If it's your first time.
Bloody boring/tiring/'I should have paid for a mechanic instead' feeling... possibly.
Assurance that you won't screw up repairing your own car bye sending it to mehanic, most definitely.. it something is screwed up, it's not your fault. (half of the time, anyway)