Select My account and sign in to your Roku account
At the top of the site is a selection of categories and genres to explore. Below that you can enter a keyword in the Search channel box to find choices based on the title of a channel.
When you want to learn more about a channel, select Details. You will see the same synopsis, rating and screenshots that appear when viewing the details on your Roku device.
Follow the instructions to add or purchase the channel
Once added, the channel will not immediately appear on your Roku device. Your Roku device checks every 24 hours for any new channels you have added from the website and automatically installs them. If you would like to download immediately, go to your Roku device and select Settings > System > System update > Check now.