Hey fellow Final Fantasy VII player! When it comes to materia management, I suggest focusing on leveling up your most used materia first, like healing and offensive spells. Make sure to link elemental materia with your attacks for added damage. For mission walkthroughs, always explore every corner to find hidden items and shortcuts. When it comes to character development, don’t neglect the importance of leveling up your characters evenly to have a balanced team. Experiment with different materia combinations to find what works best for your playstyle. Good luck and enjoy the journey through Midgar!