Hey fellow Final Fantasy X explorer! When it comes to sphere grid progression, don’t be afraid to branch out and experiment with different paths for your characters. Mix and match abilities to create powerful combinations. For side quests, make sure to complete the monster arena challenges for great rewards and tough battles. As for character builds, focus on maximizing each character’s strengths – whether it’s magic for Lulu, speed for Tidus, or defense for Auron. Have fun exploring Spira!