Search Engine Optimisation or SEO for short is complicated stuff but this is a great place to start. Webmasters in particular are interested in this fine art. In short it is optimising your content on your site for indexing by search engines. That means that your site or blog is returned with search results for a given topic. You want that it is a good thing. How high up in the search you are is another. The quest is to be the number one result. That drives traffic and for businesses money. So it is important.
I don’t fully understand SEO, nor claim to. That is why I found this article called The Basics of Search Engine Optimisation to be excellent. I also thought that for most bloggers it had some good suggestions and ideas about how you can get a higher search rank. This basic guide is probably enough for most bloggers that use a service to host their blog. For new site and content creators it is a great place to start.
A great article and worth spending the time to read and do a few Wkikipedia searches on the terms that you don’t understand.