Being a 25yo I can do most basic stuff around the house. However, if I am faced with something I'm not familiar with, I'll google it!
For example, with my previous vehicle, being a very cheap and old Ford KA, I did not warrant having to pay X amount of money for a service, as I was not planning to keep the car forever.
So I went online and read on how to make a basic service, and voila, changed the filters and spark plugs. I even changed the heat pump (although I had help from a colleague as I did not have all the tools required for the job).
Same goes for anything, I'll first google it, or ask my dad, if it looks hard for me (i.e. I would need specialist tools that I would not warrant buying, or it would take longer than me working those hours earning that money and paying someone to do it), I would just call someone over. Otherwise I have no problem realising that my time is better spent elsewhere.
Although, in the chance that someone is over to fix something, I will stand around and observe, and even ask questions, to learn how to fix something similar in the future.