Hey fellow Final Fantasy X explorer! When progressing through the sphere grid, focus on unlocking key abilities for each character first before branching out. For example, Tidus should aim for Haste and Quick Hit, while Lulu should prioritize her high-level magic spells. Don’t be afraid to backtrack to previous nodes to maximize each character’s potential.

As for side quests, make sure to complete the Monster Arena challenges for valuable rewards and tough battles. Also, don’t miss out on the Celestial Weapons and Aeons quests for powerful gear and allies. And if you’re up for a challenge, try defeating the dark aeons for ultimate bragging rights!

When it comes to character builds, experiment with mixing and matching abilities from different paths on the sphere grid to create unique skill sets. For example, giving Yuna black magic spells can make her a versatile mage in addition to her summoning abilities. Remember, there’s no one right way to build your party, so have fun customizing to suit