You can’t add apps and it’s very unlikely to have drivers for a USB keyboard. Do you have a tablet or smartphone ?
If so find the content using either and the You Tube app. Locate the TV icon click on it. A list of compatible devices should appear. Click on the FVP5000T device and it should start replaying the content. You can add content to playback queue. This works from multiple devices so any one else logged into your WiFi can add items or change the currently playing content.