Mino is short for minotaur. You'll encounter them during the main quest line and can't miss it. As for how to get the domi scene - just as usual, use only seduction spells in battle.
Just like you do with most other skills - through dresses. Progress the main plot far enough and you'll get the option later. Also, don't forget to visit the seamstress store in the first village. She gets more dresses with the main quest progression.
