history: I changed out my car's thermostat the other day. After watching a Youtube video on how to do it I felt assured I could do it myself.  I did some maintenance on my car and learned how to change out the thermostat. It was very easy using Youtube as guidance! it's insane how Youtube and the internet overall are so helpful!
current: Seriously! I wouldn't have never learned this stuff and would of had to spend hundred of dollars at a repair shop! 
next: that's so insane right? glad you did it yourself!