GeoGebraTube is home to some amazing work shared from teachers around the world. As you explore it, share the best of what you find in the google doc here. Those will show up on this page with a refresh.
Some recommendations from previous GeoGebra newbies are here: Recommendations
The Google doc for your recommendations: here
If you're logged into your Google account, you will have access to it at any point later through the main Google docs page, but the doc should be open to editing from anyone whether they have a Google account or not.
After you're done (for now) exploring GeoGebraTube, try the quick introduction.