Hey fellow Final Fantasy X explorer! When it comes to sphere grid progression, focus on unlocking key abilities early on for each character to enhance their strengths. Don’t be afraid to veer off the standard path to grab valuable stat boosts or skills. Side quests like capturing monsters in the Calm Lands or obtaining celestial weapons are great for leveling up and acquiring powerful gear. For character builds, tailor each one to suit your playstyle – whether you prefer a magic-heavy Black Mage Yuna or a brawler Tidus. Experiment and have fun mastering the sphere grid!