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 to create unique character builds.

As for side quests, be sure to tackle the monster arena challenges for some awesome rewards. Also, don’t forget about the celestial weapons – they’re a bit of a grind to obtain, but totally worth it for the power boost they provide.

When it comes to character builds, experiment with different abilities and see what works best for your playstyle. Whether you prefer brute force or strategic magic use, there’s a build out there for you. And don’t underestimate the power of the aeons in tough battles – they can turn the tide in your favor! Happy exploring!