ok ill start you off in a lil bit.
bang is a very powerful character this time around but to use this character well is to know what he has in every given moment.
for defense you have guard points and teleports, aa A nails, and D nails.
5a as an anti air and 5b as meaty will beat a lot of things out.
there are more things that you can use just find one that fits your playstyle.
his mobility is his best weapon use that shit!
mixup your opponent and keep him guessing on what your going to do,once they are good and scared then you pile on more pressure for your shennanigans to ensue.
use overheads sparingly BUT use them cause i know i can catch somone slipping once ive got them trained to block low. as it can lead to 5k damage and more oki pressure.
learn to bait DPs with bang against people that have em cause this will be a deal breaker cause ragna, jin, makoto, tsubaki, and hazamas super can put you in a bad situation bangs defense isnt all that great so once they have you learn to get out and get back in their face.
oh and play SMART dont just throw nails away all willy nilly you might need them and you onlu have 12....use it wiseley.
and watch nezu, dora ( before he went stupid), and even some dacidbro play and use it as a buildingblock to your own playstyle. i personally play like dora cause i like to bullshit a lot and usually ends up costing me the match but who cares? im having fun.