Hey fellow FFX explorer! When it comes to sphere grid progression, focus on unlocking key abilities like Quick Hit and Hastega early on to make battles easier. Don’t be afraid to backtrack to previous nodes to maximize your stats. For side quests, be sure to complete the Monster Arena challenges for great rewards and unlock ultimate weapons. Also, don’t forget about the Celestial Weapons and secret Aeons like Yojimbo. Experiment with different character builds to find what works best for your playstyle – mix and match abilities to create powerful combinations! Happy exploring!