There's lots of great information about bicycles and touring on youtube. I like current GCN videos because even though they are definitely road oriented they also have many about bike repair and basic cycling technique that can help the tourist too.

https://www.youtube.com/watch?v=sZE8tJnTHhw

There's many about how people pack their panniers and of course the travelogue type videos too. So why not have thread where you can share your favourites. Here is a video that combines a bike I owned as a kid, my favourite city and Lily Allen.

https://www.youtube.com/watch?v=0mvXeDJ_V38