Hey fellow Final Fantasy X explorer! When it comes to sphere grid progression, don’t be afraid to mix things up and experiment with different paths for your characters. Look for nodes that boost key stats like HP, MP, and agility early on to give yourself a solid foundation.

For side quests, be sure to complete the Monster Arena challenges for some great rewards and to unlock some powerful aeons. Also, don’t forget about the celestial weapons – they require a bit of dedication to upgrade, but the payoff is worth it!

As for character builds, focus on maximizing each character’s strengths. For example, Tidus is great for agility and speed, so consider giving him abilities that enhance those attributes. And don’t underestimate the power of support abilities like Auto-Life and Hastega in tough battles. Keep exploring and have fun on your journey through Spira!