How to transfer my music from itunes to my iphone 3?

I got an iphone 3 today and I also have an ipod. I had the ipod before that so i downloaded all the songs i wanted to. Now that i have the iphone 3 i need to figure out how to transfer my music from my ipd touch to my iphone. I was told not to use anything i have to download like icloud so please no suggestions like that! I need to figure this out in FULL DETAIL how to transfer my music from the itunes store.

If your songs are all purchased from iTunes store, Plug in iPod to computer, then go to iTunes menu "File-> Transfer purchases", It will copy your bought songs from iPod to computer. And then use iTunes to re-sync the music to your iPhone.

Or You may refer to this guide, it will show you the detail steps to transfer files from iPod to computer or iTunes, including music, video, playlist, photo, etc. It's easy to understand and works pretty well for me.