Blogs are an essential tool when talking about seo. They are free to setup, and can be optimized fairly easily for the search engines. I would suggest using Wordpress and installing it on your own domain, but you can use a free service if you want to.
Becoming an expert is made simple by the use of a blog. You can put up highly optimized content whenever you want to.
Social Bookmarking is an area you need to get familiar with.
There are new social networks starting up all over the place today. Seeing this trend, you should definitely realize you need to take advantage of this. If you are going to use social networks, then there are two things you need to know in order to make this work for you.
The original way social networks were to be used was for networking. It was a place people could join, and find people with similar interests. When you join these, you can make some pretty good "online" friends.
All of your blog posts need to be social bookmarked. This helps other people find your blog, and also helps the search engines to find your site. This is the other way to use the social networks.
Just by adding some of these advanced seo services, outside of the basic seo, can be just what your website needs.