Links, lots of links Do you have a more specific question? There are some good answers at this FAQ amongst others depending on what you are looking for.
As suggested above, search the forums, check the seofaq website, search google, read/post and learn. Also written a article here: http://www.webmarketweek.com/article/36.php
write good content, good meta tags, find the right keywords to place high in, build link popularity, and build even more link popularity. This is what i could think of off the top of my head
#1 buy a domain name #2 put adsense on it #3 put chikita on it #4 get links to it #5 sell links from it #6 submit to directories #7 ask for link exchanges #8 put more adsense on it #9 put 1 more adsense on it #10 write a little content for the site* *Just a sentence or two, don't overdo it.
lol @ lorien. Basic seo is making sure your pages are optimized for your search terms (title, description, heading tags, keyword density). Have as much unique content as possible, and get as many backlinks from other sites as possible.