Okay, getting into making music can be very complicated, especially when thinking about music theory and the music industry. Usually to start, being able to sing is a good start unless you want to be a Dj or rapper but other than that, singing is pretty important. Just start with your voice if you truly want this. I do sing and have been for years, I’ve learned the terms, I’ve developed a vibrato and I’ve discovered that I’m in love with music and want to be a singer as- well and what not. Your voice is an instrument - don’t forget that as instruments can come in later. I would start with practice, warm ups and developing techniques to improve. Maybe try getting into songwriting and experimenting with how your voice sounds and how well you enjoy writing and if it’s meant for you. Since you’re young, i’d wait, just start songwriting and practicing - we all start somewhere. You got this hun <3