Well there are 2 ways paid or free ways it depends which one you prefer most.
Paid #traffic is high quality however most of the time it's more targeted and it's a fast one! #Free or #organictraffic in most cases is a quality and targeted one when it comes from #Google from other sources it's not!
Can you tell more about your site, when was it built? What are your targeted audience? What are your niches? How about your content and site structure? If you have done all of these points well, take advantage of facebook, twitter, social nets, forums or Google Ads to promote your site!
These are some of the outright fastest:
1. Guest Post
2. Build Your Social Media Audience
3. Leverage Influencers
4. Use Paid Ads
5. Run Contests and Promotions
Pay-Per-Click (PPC) With PPC you only pay when someone clicks your ad and goes to your website (or a specific page on your website). Pay Per Click can be one of the most effective forms of marketing and traffic generating. The reason is simple; you are only paying for traffic that ends up on your site.