Iphone 4s switch from Verizon to straight talk?

I recently came into the possession of a Iphone 4s. I know the guy who owned it and he owed me some money, so blah. Anywho, I'd like to switch it from verizon to straight talk since I'm going out of state soon. I have never owned a smart phone before, so I don't know where to start. Any help?

What are the limitiations of iphones?

I wanna buy nexus 5 but some of my friend said that I should buy iPhone 5c i want a phone that should just have a good app and game store i have heard that you can jailbreak iPhone, what is that

What's a Good Camera for a Beginner wanting to start Photography?

Looking to become a photographer, but first let me explain abit about the situation;

Started out as i wanted to become a Mobile Disco for everyone to enjoy, i think that is what i want to with having all the gear i have now bought I don't think i can waste it all and not atleast do a gig with it. Before i wanted to become a DJ, I wanted to become a Photographer I always thought to myself that i could take some great snaps of everything ( I produced a facebook page when i was inspired and took around 7 photos which were quite neat) I said i wanted to do this for a quite awhile but then the ambition kinda stopped and i didn't really take much photos, thats when i decided i was going to be a DJ.

I know the DJing part is not relevant to the question, but I do not want to waste alot of money on a Camera until i know its what i want to do so then i can save up etc. I have seen afew people say that they have used their iPhones as a camera, My iphone is really good ( Its the iPhone 5) however thats not the same as a camera is it!

I'm wanting to know if there's a decent, really really really cheap camera i can use to see if being a photographer is what i want so please could you recommend a camera, thats not too expensive.

How to restore an iPhone without updating?

I'm trying to restore my iPhone 4S to give it to my friend but iTunes keeps telling me to update my iPhone to the latest update (7.1.1) but I already updated it. It takes forever to update and I've been waiting for 4 hours to update it.
My internet's pretty good though (and the internet occasionally cuts off so I have to restart the update all over again)…
:/

Can you upload photos to Instagram from a Mac?

I'm curious if there's a way to upload DSLR pics from my camera to Instagram. I don't see that option when logged in through the browser. The only way I know how is to email the photo to my iPhone and upload it that way.

Are there any other methods?