As a professional musician here is what I suggest if your trying to start working in the entertainment industry.
The first thing you need to do is find your talents, meaning can you arrange? Read? write? How many instruments do you play? Perform live? Run Rehearsals? conduct?
After you figure out your skills, that will let you know what kinda doors are open for you.
since I don't know exactly what your skills are I will give you my personal perspective.
I am a professional guitar player, Guitar being my strongest instrument, I have several minor instruments, violin, piano, bass, drumset, tabla, clarinet, trumpet, alto sax, etc. and I have experience conducting chamber groups and choirs.
If you want to seriously make money in this business. The most important skills you need to have are being able to read music, and knowing a lot of tunes. I know about 400-500 songs, memorized. This makes you most qualified to work on boats, through agencies, weddings, clubs etc. Being able to do this kinda work is what is going to get you noticed and open bigger opportunities. Make sure you always be professional, and never talk shit, you never know who is watching or listening. Also I don't know where you live, but if your serious, you def want to move someplace with a scene. new york, nashville, memphis, New orleans, LA. are all good. Places like this allow a lot of upward motion. Basically you could be in the best fucking band in all of Utah and no one would give a fuck, but in la, you do good in the clubs, you might get into the studios, you do good in the studios, you might get on tour, you do good on the tour, you might get the chance to work on some of your own stuff.
anyway, I hope this helps but this is legitimately how it works. I am a working professional and this my input. =)