Can't connect to itunes

I have a Iphone 4s and it can't connect to itunes. I tried to download an app, but it doesn't work. It shows me "can't connect to itunes". I can update apps but thats all. I've tried the location service, setting the date, signing in and off. I signed off and now I can't sign back in because it can't connect!

My iPhone 4 has been missing for almost a month?

However, in the first few day that it was missing, I went on Find My IPhone and it tracked it, and told me the phone is in my house.

Thanks, universe.

Any tips on how to find it? No power left so I can't track it again or call Apple to gps it… I cleaned my room, I cleaned my house, I searched my car… All suggestions are appreciated.

My iPhone 5 won't connect to the App Store

So I just got my iPhone 5 April 14 and today's the 16 of April and I've been trying to download apps and when I put the password in a notification pops up that says can't connect to App Store and I have my Wi-Fi on and I don't know what to do please help?!

Lost all my photos and videos on my iPhone 4

I just bought an iPhone 4 yesterday at Best Buy and they ported all of my photos and videos to my iPhone from my android. This morning, I went to open my photos and they were all gone. I don't have a computer so I haven't plugged in my phone to a computer and I don't have access to download any software to restore my photos. I have important videos on my phone of a cat that passed on a week ago and I really want these videos back. I've never backed up my photos and videos and I sold my old android to Best Buy so they wiped everything out when they saw that the videos transferred to my new phone. Is there anything they or I can do to recover these photos? I have no clue where they went.

Added (1). I have no clue why the pictures and videos were gone. My phone froze for a little and I had to restart it but that was after all of my pictures were gone.

Added (2). The photos and videos were missing yesterday about two hours after I bought the phone but I just figured they were somewhere else on my phone and I never looked into it.

How long can you keep your sanity after the power goes out?

It's raining, thundering, and lightning. The power went out fifteen minutes ago. And I already feel like I'm losing my mind. I was doing something important on the computer too.
Btw, I'm on my iPhone right now but it's not fully charged so I might have to go sit in the car for a while and charge it up.

How to sync my music from my iPhone to my iTunes on a new computer?

I have an iPhone 4 with a tune of music, but I would like to add more. My computer (with all of my songs from my iTunes on it) recently crashed so I got a new one. I can't for the life of me figure out how to sync the songs from my iPhone to my iTunes on my new computer. Help would be much appreciated. Thanks.

Btw, I'm not good with computers, so please provide simple, easy to follow directions.