help

HAHAHA, I'LL TREAT HE/SHE TO A MEAL IF HE/SHE IS ABLE TO HELP ME ORGANISE MY IPHONE SUCCESSFULLY. i have like 150 apps. i wanna get rid of some but i just don't know which to delete cause i still play all of them once in a while. & even if i don't play them, the app isn't free, like it's US$0.99. it was free when i downloaded it. next, the 8GB PLUS WORTH OF SONGS i have. i wanna get rid of songs which i really don't wanna listen but somehow, even after deleting them, i move them back into my iphone months later. helpppp. i want more memory space! )): i really find it very tough to delete stuff off my iphone, whether it is songs or videos or pictures or just apps.

)):