I looked through the in-game grad section and could find nothing on lessons in Twinswords. There are some pretty devastating moves there - is there a tutorial available?

Same goes for Sparring.

I did a quick search and couldn't find anything useful about twinswords. Just play around in single player and you'll get the hang of it. That's honestly the best way to learn.

As for sparring, do a google search for it and see what you find. I also think there may also be an organization for sparring but that might have been a while ago.

There is a tutorial too in 'youtube'