I wouldn't go to the distant past because I'm a creature of the modern age & don't have the logistical know-how to make a living. Can't go to ancient Rome cause I don't speak Latin. Can't go to the middle ages cause anything I do (such as speaking or simply pulling out a cigarette lighter) will scare the crap out of people so badly that I'd probably get mobbed & murdered for being in league with Satan or something
I'd simply go back to 1993 or 94, introduce myself to myself, give the younger me a list of about 5-6 webco's to invest in as they get invented- like Amazon, Google, E-Bay, Facebook ect, tag along to go see a bunch of really cool club bands again, introduce him to 'the best girl that got away' & strongly impress on him that in the future, it's better not to not take her for granted & screw it all up again like last time.:crazy: