I am becoming an expert - here are some easy ones:
-Make sure you have a good title tag on your homepage. It should use some keywords that are relevant -- so when people search for them, your site has a chance to be high in rankings.
-Make sure that each page on your site has a DIFFERENT title tag -- if they are the same, the search engine thinks the pages are actually competing sites.
Title tags are key for getting your site up high in SEO.
Some great tips are also here -- you have to get into the tech mindset though