HOW TO RUMBLE! Brand new to Rumble and have no clue how to Rumble!

I am totally brand new to Rumble. I have no idea how to create my channel to look like it does over on Youtube. Any comments to give me an idea how to do so will be greatly appreciated. Trying to figure out how to create a background like I do over on my channels on Youtube. So I need to learn how to Rumble!