psi 
When I was younger I was always tinkering with stuff from bikes, to gocarts etc. I was always taking things apart and fixing them and changing them out etc. Learned a tad bit of maintenance from my dad when he was always working on his semi. Learned a lot more from watching other guys do things and I took automotive at the local tech school for a few semester while in hs that taught me a lot and I was helping buddies fix or mod their cars.. Few years later I got the GP and started modding slowly and doing all the basic to it and eventually got crazy with it.
I had thoughts of making a career out of it and becoming a mechanic but after I witnessed a bunch of guys who once use to love it end up hating it after awhile after day in and day out of fixing someone else's crap and being covered in grease and grime for crap pay.. I said yea that's not for me I'll stick to it as a hobby only. So I just work on my own projects, or family or give my buddies a hand when they need it.
Just have the eager and willingness to learn and you'll find out the wealth of information that's available to you.
I always had the mentality that I will not pay someone to do something for me as long as I'm able to do it mentality and physical I will do it myself. My body hasn't let me down yet so I will continue doing things for myself.
