Hey fellow Final Fantasy X explorer! When it comes to sphere grid progression, don’t be afraid to mix things up and experiment with different paths for your characters. It’s a good idea to focus on each character’s strengths and unique abilities to maximize their potential.

For side quests, be sure to complete the Monster Arena challenges for some awesome rewards and tough battles. Also, don’t forget about the Celestial Weapons and Aeons quests for some powerful gear and allies.

When it comes to character builds, consider customizing your sphere grid to suit your playstyle. For example, you can focus on magic for Lulu, strength for Tidus, and agility for Wakka. And don’t neglect the utility abilities like Steal and Use, they can really come in handy during tough battles.

Happy exploring in Spira! If you have any specific questions, feel free to ask.