Hey there, fellow Final Fantasy X explorer! When it comes to sphere grid progression, my tip is to focus on each character’s strengths and unique abilities. Don’t be afraid to mix and match different paths to create well-rounded characters.

For side quests, definitely try your hand at capturing monsters for the Monster Arena and completing the Celestial Weapons quests for some powerful gear. And don’t forget to participate in blitzball tournaments for fun and rewards!

As for character builds, consider specializing each character to excel in a specific role, whether it’s physical damage, magic casting, or support. Experiment with different abilities and see what works best for your playstyle. Happy exploring!