I think blogs are the easiest sites for SEO. You can have plenty of choices for the contents. You have plenty of space for link exchange. The best thing is blogs are the hot topics now and you can see lots and lots of resources for blog. Here is one for you. This is called Marketing ICE. Marketing ICE trains our customers how to be better online marketers, bloggers and how to get traffic via a variety of SEO Techniques.
Its basically a SEO Training but better than the traditional methods. This is video tutorials so really easy to learn. They have more than 70 videos and you can choose a lot from where you can learn. Here is the link. Cool Video Training on SEO and Blogging