Hey fellow Final Fantasy X explorer! When it comes to sphere grid progression, focus on unlocking key abilities first, like Quick Hit for Tidus and Doublecast for Yuna. Prioritize moving along character-specific paths to maximize their strengths. For side quests, don’t miss out on celestial weapons and aeons like Anima and Magus Sisters. Experiment with different character builds to find what suits your playstyle best. And remember, don’t be afraid to backtrack on the sphere grid to optimize your stats and abilities! Happy adventuring!