Site launched, now how to advertise?

Hi

My site has been up for a couple of weeks, fully functional and ready for people to use. I’ve currently the 1 store on there which makes a few sales a month, but it’s 1 of my own.

The site is sellfiles.net

How did you guys properly launch and start getting customers? My downfall is I’ve never been good at marketing. I don’t have a lot of Twitter followers, I have no email list and my ad credit will be low as I’m currently in the process of moving house.

Any suggestions, or things you did? Much appreciated.