No, not really, unless it's porn - but that's all pretty much the same. I have a few tried and true techniques that tend stick with that never disappoint...
Didnt set out to but especially in the early days when us guys were always jacking off together. Everyones cock is different and we all had our own proffered techniques, but we did try each others ways. I picked up a few things, and a few friends abandoned their way completly and addopted ours..