Hey fellow FFX explorer! When it comes to sphere grid progression, my tip is to focus on each character’s strengths. Make sure to unlock key abilities like Quick Hit for Tidus and Doublecast for Lulu early on. Don’t be afraid to branch out to other nodes to make your characters more well-rounded.

For side quests, don’t miss out on the Celestial Weapons and Aeons. They can really give you an edge in tough battles. Also, make sure to complete the Monster Arena challenges for some great rewards.

As for character builds, experiment with different paths on the sphere grid to find the best combination for each character. Mix and match abilities to create a powerful team that can handle any situation. And don’t forget to customize your equipment to further enhance your party’s strengths. Happy exploring!