How can i get a top rank by Search engine optimization?

[Jake]

2 & 3 = 1

A general rule, the harder a link is to get, the more it tends to be worth. Blog and forum links are some of the easiest to get, search engines know they are commonly generated by spam bots as well, at least getting links from relevant sites that people are likely to actually click will provide more benefit.

In all likelyhood SEO will just raise the ranking of a site a few places up from what it naturally deserves, you still need better content than the competition to be sure to get top position.