Hey fellow Final Fantasy X explorer! When it comes to sphere grid progression, focus on unlocking key abilities first before branching out. Prioritize upgrading character stats like HP, MP, and strength. Don’t be afraid to backtrack to previous nodes to maximize your character’s potential.

For side quests, be sure to complete the Monster Arena challenges for valuable rewards and AP. The Celestial Weapons are a must-have for endgame content, so invest time in completing the side quests to unlock them. Additionally, don’t forget to participate in blitzball tournaments for unique items and abilities.

As for character builds, tailor each character to their strengths. For example, Tidus excels in agility and speed, making him a great physical attacker. Yuna is best suited for magic and healing roles. Experiment with different abilities and mix up your party to find the perfect balance for your playstyle. Happy exploring!