Even though Chromebooks are easy to use, there is a learning curve for some people as it does do things differently. Luckily there is a built-in help app.
The "Get Help" app is in the App Launcher. It has a user manual, tutorial, tech support resources, and a "New to Chromebooks" section that provides some step by step directions.
There is also a "Fix a problem" section which offers troubleshooting support. In addition, there is a link to Chromebook Central, which is a Google-run help forum for Chromebooks.