YouTube. Ftw. My local.mechanic, just up the street didn't know how to change the cabin filter in the Fit But he knows how to change the oil and air filter and put new brakes on.
It was a five minute job.
Now that I know how to do it, I'll do it more frequently.
I keep the weed eater properly tuned also, via YouTube. It's come a long way since its early days. Kinda like Amazon, since it sold only books.