Hey fellow Final Fantasy X explorer! When it comes to sphere grid progression, my tip is 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 on the grid to create unique character builds.

As for side quests, make sure to complete the monster arena challenges for some awesome rewards. Also, don’t forget about the celestial weapons and aeons quests – they can really power up your team for the final battles.

When it comes to character builds, experiment with different abilities and see what works best for your playstyle. For example, you can turn Lulu into a powerhouse black mage or give Auron some additional utility with his skills. Remember, there’s no one-size-fits-all approach, so have fun customizing your party to suit your preferences!