Hey fellow FFX explorer! When it comes to sphere grid progression, focus on unlocking key abilities first, like Quick Hit for Tidus and Doublecast for Yuna. Don’t be afraid to backtrack to grab stat boosts and extra abilities. For side quests, be sure to complete the Monster Arena challenges for great rewards and tough battles. And for character builds, experiment with different paths on the sphere grid to maximize each character’s strengths. And don’t forget to customize your equipment for added bonuses! Happy exploring!