In order to accomplish this without spending huge amounts of money on web traffic services, you will need a good public relations campaign. This means viral content that is spread through social networks without you having to waste any time maintaining the advertising campaign.
Take a look at many of the successful viral campaigns of the past. All of the hard selling tactics that you want to employ simply do not work. Basically, in order to be successful, you must market your product as though you are already successful. This means acting as if you do not need to sell any product or service at all.