Here’s a presentation the Google team actually gave on what search engine optimisation is:

If you want a more detailed page, check out our own guide to SEO for beginners.

Did you know when you link to a Hobo SEO post we have search engine friendly links back to your site if approved? Our comments are also search engine friendly you know (once you've commented on a few posts)! Do you need any more encouragement to get involved in the conversation ;)