Hey fellow Final Fantasy X explorer! When it comes to sphere grid progression, focus on maximizing each character’s strengths. Don’t be afraid to mix and match different paths to create unique character builds. For side quests, be sure to tackle the Monster Arena challenges for some epic battles and rewards. Also, don’t forget to complete the celestial weapon quests for powerful gear. Experiment with different abilities and spells to create versatile character builds that can handle any situation. Happy exploring!