Google free classified ads, here you can place your ads daily. You will get sales from these efforts and build your back links.
Also look up free ezine advertising. You can place your ad for free in ezines if you subscribe.
Join forums pertaining to your business and start networking. Your goal here shouldn't be to promote your business but to help others. Once you gain your reputation as such then you can ease your business into the relationship. People buy from friends, not strangers.