Hey fellow Final Fantasy X explorer! When it comes to sphere grid progression, I recommend focusing on each character’s strengths. For example, Tidus is great for agility and speed, so prioritize those nodes for him.

Don’t be afraid to branch out to other characters’ sections to grab useful abilities like White Magic or Steal. It can really diversify your party’s skills.

As for side quests, be sure to complete the Monster Arena challenges for some awesome rewards and tough battles. Also, don’t miss out on capturing all the monsters for the Arena.

When it comes to character builds, experiment with mixing different paths on the sphere grid to create unique hybrid roles for your party members. And don’t forget to customize your own abilities to further enhance your team’s capabilities. Happy exploring!