Have a look at the wiki page if you haven't already.
The turn frames are long, so your moves have to compliment each other in a way that will flow well. Fighting relaxed or holding all is up to you, depending on the kind of fighter you want to be. Relaxing all will make you faster and hit harder, holding all will make you harder to DQ, and make it easier to move. Go into freeplay and test around the joints in the mod. Good luck.