There is a fine line between using facebook/twitter well and people thinking you are an annoying t*at on there cos yo are bedgering people all the time. Think of an angle that you can use and use it.
Amen. Well said that man.
I have (unfortunately) had to deal with many poor promoters down the years, and with the boom in social media their product (and indeed productivity) has declined as their usage of facebook has increased.
The key is getting out on the street, talking to people and building a brand from scratch with a USP - like any kind of product really.
It's the hard balance of finding something appealing to a wide enough audience, but at the same time not replicating something already on the market...
My advice would be - don't try to run before you can walk - find a credible promoter, and become a lackey, learn the ropes. Especially seeing as you'll be in a new town. You will find and learn things you never thought you'd need too. This will also help you build-up a network & database.
Get your face out there and known. Create a reputation for yourself as a hardworker, working for somebody else.
Then when the seeds are sowed, take a dive and begin your own events. Start small, don't expect to make a profit in your first few outings, keep it personal, but accesible, keep it passionate - and if you do make any money, reinvest it back into the promotion.
Also- piggy-back promo-ing - find another event which is currently experiencing an increase in popularity. More than likely, they will be looking to move to a larger venue (potentially with more rooms/arenas), so you can then put yourself forward as a DJ on the line-up, or even hosting one of the B-rooms.