any tips on playing/writing for instruments irl?

[aurore_star]

so i'm in a few bands at my highschool and i was wondering if anyone had any tips based on instruments in real life? i play both oboe and alto sax, does anyone have resources about them? or any tips about writing music for real players to play? i'm going to go to college for music comp as one of my minors, but i was thinking about writing a marching show for my band play and i suck at writing music that sounds good when people play it :-(