The samples listed above demonstrate working Roku channels. Often the best way to learn a framework is seeing a working application running. Make sure to obtain a Roku device - it's required for following these steps. Products are found at https://www.roku.com/products/compare and on many online stores.
Simply sideload these zip files to evaluate channels on your Roku device. Before proceeding, review the following guides:
Using your Roku remote, enter the following button sequence:
:house: :house: :house: + :arrow_up_small: :arrow_up_small: + :arrow_forward: :arrow_backward: + :arrow_forward: :arrow_backward: + :arrow_forward:
Follow the steps to activate developer mode on your Roku device. Save the IP address at the end of the process (example: http://10.1.168.265)
Enter the following IP address in a web browser, log-in with username rokudev and the password you set during the developer mode process.
Take any of the .zip files and upload/install to the developer application installer. Your Roku device will load the sample channel instantly.