How to make your twitter account private?

I need help i have people stalking me and its creepy i have the app of twitter on my iphone but i just can't figure out how to make my account private if anyone could help it would be awesome!

How much would at&t charge to cancel my contract?

I have an iphone and my contracts end on november 19. I know its close but this iphone is so horrible now i want to upgrade. They have an online sale for a $30 refurbished s4 and thats cheaper than paying $200! But you have to renew your contract to get it for $30.So does anyone know how much they charge to end a contract early?

IPhone keeps using data instead of home Internet?

I have an iPhone 4. When I'm at home, my phone randomly starts using data (3G) instead of my home Internet connection. Because of this, I'm really close to passing my monthly data limit. Is there anyway that I can prevent my phone from going to data at home, something in the settings maybe?

Bummed about my crushes texting

There's this guy i kind of like and i haven't texted him in awhile, however today i texted him and it was quite entertaining conversation and i know he read my text (because he has an iphone and it says he did) and he used to do this all the time and it just makes me sad and i don't want to be sad about it. What should i do about it? How do i make him like me q lot as a friend?

Can two devices be synced on the same computer?

My sister has this old iPod that she wants the songs synced up to her iPhone, and I don't know how to use her computer so I'll use mine. The thing is, my iPhone is already synced to it… However, if it is a different user account (computer account, not iTunes) what will happen? Can I sync it?

IPhone will pick up Wi-Fi but laptops won't?

My iPhone is picking up Wi-Fi at my house but my laptops won't. (I know it's picking up from the router because I shut it off and it stopped - and it's not 3G or anything like that either.
Any advice on why it would be doing this?

What service & plan would be best for a iPhone?

I'm looking to get a iPhone and I'm wondering what service/plan would be the best if I'm leaning towards the iPhone?
Also when does the iPhone 6 come out? If soon. Should I just wait for the iPhone 6?