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 agility and speed, so prioritize those nodes for him. Don’t be afraid to mix and match different paths on the grid to create unique character builds.

As for side quests, be sure to complete the Monster Arena challenges for some great rewards and to unlock powerful monsters for your team. The Celestial Weapons quests can be tough but are totally worth it for the ultimate weapons.

When it comes to character builds, experiment with different abilities and skills to see what works best for your playstyle. Mix and match different spheres to create a well-rounded team that can handle any situation.

Happy exploring, and may Yevon guide your path!