Why won't iTunes transfer any song or any file to any of my devices?

I have unistalled and reinstalled iTunes multiple times. When I go to to transfer a song to iphone, ipad, ipod it just freezes up and doesn't do anything. I'm running the newest version of the program. What do I need to do? Just want to fix it. Thanks. I have waited on the program to transfer just to see if it is slow or what and it took 30 mins and nothing. I can't download software updates also.

How much would it cost to repair my iPhone 4S speaker?

I had gotten chocolate stuck in the speaker part of my phone (bottom left) and since then the music coming out sounds scratchy and a little bit lower than it should sound. I'm wondering how much it would cost to fix, if there's anything I can do on my own to fix it and where I would be able to go to get it fixed.

Any suggestions are much appreciated!

What do I do when I forget my iPhone passcode?

I was in the car with my sister yesterday and she saw me putting in my passcode so I changed it to something different but I think it was a complete random number and now I can't remember what it was. I haven't synced my phone to iTunes on my computer yet because I haven't needed music, but now I can't restore it. It says i need to unlock my iPhone before it can connect to it. Is there anything I can do?

Where can you find the total amount of gb on a verizon iphone 4s?

My boss wants to sell is iphone 4s from verizon since he got the iphone 5 but he can't remember how many gb the 4s is… I went to settings… General/about and it says capacity 13.7 gb, is that it? Everytime i look iphones up on ebay/craigslist all i see are 16gb, 32 gb, 64gb, and sometimes 8gb