Hi,
I preferred these methods.
1. Search Engine Optimization
Search engine optimization is the process of the improcing volume and quality of traffic to a web site from search engine for target keyword. Oftenely the earlier site is presented in the search engine more viewers will visit this site. It is also known as on page optimization.
2. Search Engine Marketing
SEM, is a form of Internet marketing that seeks to promote websites by increasing their visibility in search engine result pages
3. Social Bookmarking
Many social bookmark services encourage users to organize their bookmarks with informal meta tags on behalf of the traditional browser-based system of folders, although some services feature categories/folders or a combination of folders and tags.
There are some other methods also like forum posting, article submission, press release, link exchange, directory submission for
SEO 