How do I transfer songs from my iPhone to my iTunes on my computer?

Your question has probaby been answered already because it was posted a month ago but anyways what you do is you plug your phone into your computer. Next you want to open iTunes and click on File. Then you go down to "Transfer Purchases from *your name* iPhone". Then just wait for it to sync and you should be good.

But what if i have music on my iphone that i did not purchase so it will not be in that purchase folder. How do i then get it from my phone to my new laptop that does not have any of the songs i have on my phone?