You should defend your big blind pretty wide! As a beginner's guide to defending your big blind, aim to defend with a wide range against steals, typically around 40-60% of hands. Prioritize strong hands like broadway cards, suited connectors, and pairs. Adjust based on opponent tendencies and bet sizes—consider calling or raising with stronger hands and folding weaker ones. Balance your defense to avoid becoming too predictable, but always factor in your position, opponents’ actions, and your hand strength before deciding to defend.