Throw ball was automatically placed on the first open quickslot for me when I joined Huttball for the first time, so that wasn't an issue. I had a friend who didn't watch any youtube vids like I did before playing it and as a result he hated it and said it sucked.
Several matches later (it is by far the most occuring warzone as we're empire and its the only match that can be Empire vs. Empire on an overly Empire pop server >.<) and he finally knows the ways around it and enjoys it.
To be honest, I'd say you just need to watch a youtube video on it with commentary, takes 5-6 mins and you'll know the match well enough. A tutorial vid would help a bit though yeah.