How to change my imessanger?

I'm using my friends iPod Touch and his messenger is currently logged in and he uses it for his iPhone so I constantly getting messages from his friends (which he is having conversations with) and I want to log out of his on the iPod and make my own but I don't know how?

Ideas for videos and getting views on YouTune?

I've wanted to make YouTube videos for years, but my my fiancé destroyed or MacBook Pro when he spilled melted ice cream on it, but yesterday I found some cool apps to edit videos made on my iPhone. I made one video just as a test. I'm limited to only make videos where I talk to the camera, so I want to make some funny videos with me just talking about funny things. I want to make rant videos (fall kinda into funny) where I just rant about silly stuuf, and I also want to make videos about serious things.

So I'm looking for ideas on what topics to talk about and also how to get viewers I don't want to make video NO ONE watches. I'm not looking for a ton of subscribers, just some.

So please help me out guys please

Wi-Fi instead of data on the IPhone 4?

I was considering getting the iphone 4 and I just wanted to know… If I have Wi-Fi in my house, can I use that instead of data? I'm pretty sure the answers yes, but I'm not very technologically advanced.

Do iPhones have Wi-Fi everywhere with a no data contract?

I'm getting a iPhone 4 on contract, the contract I'm getting has unlimited text, 500 minutes but does not have data. (0gb)
Will this mean I won't be able to assess the Internet when I'm out?
And if I do choose this contract will it mean that I won't be able to access facebook/snapchat when out?

How to make a video fit on the screen?

I have filmed a short movie with my iphone 4 in a longitudinal way, so when i added it to my computer the movie was really messed up, black blanks on each side of the screen, and a very thin video frame

how can i make it fit on the screen? I don't care if it loses its quality

Does personal hotspot cost on iPhone 5?

I want to use my personal hotspot to connect a Wi-Fi to my laptop in the car. My iphone 5 is on an unlimited Internet contract, will it cost extra or is it free?