A simple basic steps need to be taken to let your blog search engine optimized (SEO). Although it needs you to know basic HTML, but dont worry, it is very easy.\
1. Meta keywords and Site Description. Add these thing in your template/theme index page before the code < /body>
2. If you are writing a article, dont forget to put the title to your article. Normally the title is coded with H1 and H2 classes. And everybody know that H1 and H2 classes show the search engine the main subjects and Table of Contents for the content to be indexed.
3. Repeat your keywords in your article. And use bold, H1 or H2 whenever possible