The way to defend is to learn tons of theory...
I would never advocate playing this as black (i would prefer accelerated dragon) because u will suffer many defeats but if u are stubborn...
Use chess.com video series by Keaton Kiewra!
https://www.chess.com/video/player/keatons-pet-dragon
Hey! I want to know how to defend against the Yugoslav because I seen many people use it, against the Dragon.