Hey fellow FFX explorer! When it comes to sphere grid progression, I recommend focusing on each character’s strengths. For example, Tidus excels in speed and agility, so prioritize nodes that enhance those stats.

For side quests, don’t miss out on the Celestial Weapons – they’re powerful and definitely worth the effort to obtain. Also, keep an eye out for optional Aeons like Yojimbo and Anima by completing their respective side quests.

When it comes to character builds, consider customizing your sphere grid to suit your playstyle. Experiment with different abilities and spells to create a well-rounded party that can handle any situation. And don’t forget to level up your Aeons as they can be a game-changer in tough battles. Happy exploring!