Hey fellow Final Fantasy X explorer! When it comes to sphere grid progression, focus on unlocking key abilities and stat boosts for each character. Don’t be afraid to mix and match different paths to customize your characters’ strengths. For side quests, make sure to complete the Monster Arena challenges for rare items and AP. Also, don’t miss out on the Celestial Weapons quest for ultimate gear. Experiment with different character builds based on your playstyle – whether you prefer physical strength, magic prowess, or support abilities. Happy exploring!