i have ICloud on my PC, IPad & IPhone. The problem is that I limited space on IPhone. I can no longer add or update music and apps. I do not know how to upload "Purchased" ITune music on IPhone. Specifically, how can I create more space on my IPhone

I have ICloud on my PC, IPad & IPhone. I cannot determine how to maximize the ICloud regarding storage problems on my IPhone.

The problem is that I have limited space on IPhone (16 gb). I have too much music. I have eliminated some apps.

I can no longer download or add &/or update music and apps.

The reason I bought ICloud was to free up storage space on my IPhone. I believe allnew apps and music are being downloaded from the PC to ICloud.

Again, the problem is my previously purchased library of 1400+ songs.

I do not know how to upload previously "Purchased" ITune music on my IPhone to ICloud. Most importantly, how can I create and free up more space on my IPhone?