Hey fellow FFX explorer! When it comes to sphere grid progression, I recommend focusing on each character’s strengths. For example, Tidus excels in speed and agility, so prioritize those nodes for him. For side quests, don’t miss out on the Celestial Weapons – they’re powerful and worth the effort to obtain. Character builds can vary based on your playstyle, but don’t neglect abilities like Quick Hit or Ultima for big battles. Happy exploring!