Starting DFO, what should i know?

Oh god. I got a Nen Master at 40, and it is plain DELICIOUS. It's a little slow at first with just spamming Nen Shots, but once you get Nen Cannon things just die. Then get Nen Spiral, and things die EVER FASTER. Nen Master is pretty fast paced, especially if you mix in melee attacking with Suplex Cancel like I do. Electrocution is the name of the game for Nen Masters, and it really shows.