Bought stole item of Craigslist

I bought an iPhone 4 off Craigslist and I brought it to the phone store they said It was reported lost or stole. I have the guys phone number what should I do?

How to download music directly into my iPhone?

I recently bought an iPhone 4S, and it's my first Apple gadget. I'm still figuring out how to tweak it and stuff, but one thing I can't figure out is, how do I download songs from iTunes straight into my iPhone?
Is it possible to just purchase music from the iTunes app in my iPhone and have it download directly in my phone?
I haven't managed to buy songs yet, but I'm planning to, as my dad's making a bank account just for that purpose.
Is it possible to not use a computer as a third-party to have music in my iPhone?
I've Googled this tons of times, but the fancy lingo couldn't quite stick to my brain, so I hope your answers would at least be able to be interpreted

What should i buy iPhone 5, or iPhone 4S?

Should I buy an iPhone 4S 64gb, or wait for an iPhone 5 but only get a 16gb since it would cost so much more. I'm going to buy them unlocked whichever one I get, if I got a 16gb iPhone 5, yes it would probably have some nice features and run quicker than the 4S. If i got a 64gb iPhone 4S then it wouldn't be as good I think, smaller screen, smaller processor etc, but I highly doubt I would have to worry about running out of space like I have in the past with 16gb iPhones. So which one iPhone 5 16gb, or iPhone 4s 64gb?

My iPhone 4 won't turn on or charge?

It was fine last night. I left it charging at night and upon waking my iPhone wouldn't start. Black screen, no charging logo after pressing the power button. I wondered if the charger wasn't working, so I used another one, a second identical charger, and then finally an iPad charger. Nothing changed. I tried pressing the power button for 5, 10, 20, 30 seconds and nothing. I did the same with both buttons (Home and Power). I tried to get it into DFU mode and nothing. The computer does not recognize it, iTunes either. Then, by tightening the buttons frantically (connected to de USB port of the computer), appeared for a split second the charging logo, saying it had no charge.
Sometimes when I disconnect the iPhone, the symbol (No charge symbol) appears.

I researched the internet and no solution was applied to my case.

Why isn't my iPhone getting service?

I was putting my phone in and out of air plane mode a little bit to save battery because I was in an area that had a very poor signal. Now I have turned airplane mode off and no matter where I'm I have "No Service" on the service bar. I can get Wi-Fi but not cell service or 3G (I have Verizon)

How to record voice memos on my iPhone that can be sped up?

Is there a way to record voice memos on my iPhone that can be sped up? I don't have my computer, so I need to do everything on my phone. I'd like to be able to make a playlist of voice memos that I can play back to myself at about twice the speed they're recorded. Any ideas.

IPhone 4S storage problem

My iPhone 4S had an alert that came up with I was trying to download a app (616 MB) from the app store. It said that "there's not enough available storage to download the app and that I need to manage my storage in settings." So then I started to delete a couple of my apps, and now in my usage area of my phone it says that I now have 647 MB available but when I go back to the app store to get the app that I wanted I still get the alert about my storage again! What do I do?

Why won't itunes start on my computer?

Today, when I tried to open my itunes account in order to download a few songs to my iphone/ipod, it wouldn't open. I tried restarting/shutting the computer, holding ctrl and shift in order to open it in safe mode, and even went to delete "sidb" files or something like that like this website says: http://support.apple.com/.../kb/TS2363
but still nothing will get it to open.
I have maybe a half hour to forty five minutes until I have to leave, and it would be awesome if someone knows some sort of solution. I'm going to Warped tomorrow and wanted a few songs to listen to on the ride there.

I believe I use Windows Vista if that's important.