You should make the main content full screen or at least larger and perhaps add more fields. It took a long time before it loaded in the boxes, so is the server overloaded atm?
By more fields do you mean more departments/subjects? Those would be added over time, it takes time to find and vet videos and I didn't want to have a bunch of mostly empty ones, though I understand that it can give the appearance that many things are just left out (users can also suggest new ones when adding videos).
The backend is on Lambda and DynamoDB so it should be able to handle it, but it does seem to be slow right now, I'm increasing the ReadCapacityUnits to see if that helps.