Hey fellow Final Fantasy X explorer! When it comes to sphere grid progression, make sure to focus on your characters’ strengths. For instance, 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 Steal or Curaga.

For side quests, definitely aim to complete the Monster Arena challenges for some awesome rewards. Also, don’t forget about the Celestial Weapons – they’re powerful when fully powered up. And if you’re up for a challenge, tackle the dark aeons for some epic battles.

As for character builds, experiment with different paths on the sphere grid to tailor your party to your playstyle. Mixing and matching abilities from different sections can create some powerful combinations. And don’t overlook the importance of mastering the ultimate abilities like Quick Hit or Ultima for those tough boss battles. Enjoy your journey through Spira!