Hey fellow Final Fantasy X explorer! When it comes to sphere grid progression, my tip is to focus on unlocking key abilities first, like Haste and Curaga. Then, branch out to other nodes to maximize your character’s potential. Don’t be afraid to backtrack to grab important stat boosts!

For side quests, be sure to complete the Monster Arena challenges for valuable rewards and tough battles. The Celestial Weapons quests are also a must-do for ultimate power. And don’t forget about the Al Bhed Primers and Jecht Spheres for extra lore!

When building your characters, consider specializing them based on their strengths. For example, Tidus excels in speed and agility, so focus on boosting his accuracy and critical hits. Experiment with different paths on the sphere grid to create unique and powerful builds for each party member. Happy exploring!