Am I able to put music from my computer to my iPhone?

I have a USB with loads of songs on it and I have a computer. Not apple or anything fancy, can I put the songs onto my computer usinrg iTunes or something and then do something ( i don't know ) and make them go onto my phone? I'm sorry I'm hopeless with technology. Can I put the music onto my phone WITHOUT downloading anything on my computer? And if so then how?

You need iTunes in your computer. Add the songs to your computer's iTunes and then, from there to your iPhone. So easy. They're all be in your iPhone's Music app.