Hey fellow Final Fantasy X explorer! When it comes to sphere grid progression, make sure to focus on each character’s strengths. For example, Tidus is great for speed and agility, so prioritize those nodes for him. Don’t be afraid to mix and match different paths to create a well-rounded team.

As for side quests, be sure to complete the monster arena challenges for some great rewards and tough battles. The Celestial Weapons quests are also worth it for the ultimate weapons. And don’t forget to hunt down all the Al Bhed Primers for some extra lore!

In terms of character builds, experiment with different abilities and customize your sphere grid to suit your playstyle. Whether you prefer heavy hitters like Auron, magic users like Lulu, or support characters like Yuna, there are plenty of ways to optimize your team for success. Happy exploring!