I have played piano for a while, understand music theory, etc. and can write songs.
I don't know what the best way to do this is, but I want to be able to use some program where I can put in a series of notes of different lengths (preferably for all different instruments) and it will spit out a music file for that. I am very new to music development and I am not sure if this is possible, but if someone could point me in the right direction that would be ideal.
Also just to make it clear, I have no keyboards or instruments that I can use to plug in to my computer, I am looking to be able to do it all within the computer. I am running Windows 10, and I want it to be free, and I can export and use the songs for anything I want (no copyrights).
[EDIT] Still looking for help, thanks!