You should use proper Meta tags so that search engines can easily recognize your website/web pages. Using a meta title will help people find it by name and using a meta description will help people find it by its topic. Try to keep your meta tags accurate and avoid adding any unrelated keywords, or key phrases within the Meta Tags of your site.

Search engines appreciate larger websites as compared to smaller one. By adding useful content you can actually gain higher SEO rankings. There is an old saying in SEO industry "Content is King" and it is very much true.

Add new content on regular basis. Your website should be error free as well.

Use proper headlines and subheadings for various sections of your content. Search engines use both in their crawls and the words you use in them will determine what terms from your site are being recognized. Avoid over-stuffing your website with your keywords.

Add proper TITLE tags and Meta Description Tags. You should also avoid stuffing your meta tags with unnecessary keywords. Only include most important keywords and key phrases within the TITLE tag of your website.

Target those keywords which truly reflect your business services/products offered.

Avoid stuffing your website with unnecessary on-page javascript or flash. Search engines do face difficulty in crawling flash websites.

Try to get back links from quality websites (not necessarily High Page Rank websites).

You can submit your website to various directories at a relevant place. Make sure to add your website in the most relevant category.

Avoid Black Hat SEO techniques unless you are on a suicide mission.