I would say that I learned from a porno I caught on late night tv as a younger kid. I was probably 11 or so, and I was skipping through channels around 1 or 2am, I came across a scene of a guy having this asian lady jack him off, which made me a little curious... I instantly ran into the bathroom and gave it a try. I was still to young to cum or anything, but I did this for years and years, and am still an avid wacker :)