Kaspar Szymanski, who is an Search Quality Strategist in Google’s Dublin posted the official one page Google SEO cheat sheet.
The Google SEO cheat sheet
(1) How to make your search results look good in the search results. Google recommends you craft your titles properly, make sure your domain name and file name structure is descriptive of the page content and tailor useful and descriptive search descriptions.
(2) Let Google to understand what actually your image is? This can be done by giving the descriptive file names, use alt attribute and write short captions below every images.
(3) Write the best and most useful content, while not forgetting to continue to keep adding useful and unique content to your web site.
These are the 3 main points when it comes to optimizing your website for Google’s search results. These are the basic steps which must be done by your websites.
Here is the PDF that you can download.