Music on my mobile phone?

You should have USB cable from your mobile phone which you can connect computer with mobile phone and should appear couple drives or at least one in which you can create folder and upload music etc. Mostly every folder usually have simple names like 'Mobile Files' etc.

Also you can use Micro SD Adopter if you want upload your files on the memory card of your phone. It's must easier to do than using cable from the mobile phone. Micro SD Adopter has different types depending from the type of phone.

Also you can download song from other mobile phones using bluetooth which is also simple if you know how to turn bluetooth on and off. To learn is easy just need to do some searching inside mobile phone.

Also source might be useful for you as example:

Just connect your phone with computer using bluetooth or usb cable and then copy those music file you want and the paste on your phone partition.

I use tubidy on my fone it's easier, you can download music without your computer