How does Google Search work? - Read this short guide to understand how Google works.
Get your business/video/other information on Google - See the different ways to get your business or identity on various Google products, including Maps, Search, and YouTube.
Optimize your site for search engines - Read this short guide about making your website more findable and useful to readers.
Measuring your performance on Google - Is your site on Google? How many people found your site on Google? What is your ranking in search results? What were people searching for when they found your site? Learn how to answer these questions.
If you think your site needs more help than you can provide, you might consider hiring a professional search engine consultant.
Watch our video series for beginners on various topics, if you prefer learning through videos.
If you are using WordPress, consider installing Site Kit from Google. This plugin provides simple but useful metrics that show how you're performing on the web, and doesn't require any specialized knowledge.
If you are using any other site hosting service, sign up for Search Console Insights. Search Console Insights provides simple statististics and performance milestones for your website, right in Google Search. All you need to do is prove ownership of your site.

Check out @GoogleSearchCentral on YouTube for more educational videos