This hour gave you a good head start into developing solutions and features for SharePoint 2010. You created your first web parts as both a farm solution and as a sandboxed solution. You learned that sandboxed solutions are the recommended way to develop code in SharePoint 2010 and also learned about the restrictions imposed on sandboxed solutions. In addition you looked at features.
Debugging in SharePoint 2010 is another important topic as you continue in your journey to learn SharePoint and later when developing real world solutions in SharePoint. Hopefully by now you have a good idea how to write and deploy solutions for SharePoint in Visual Studio 2010.