This was not a real answer.
Go to facebook.com/twitter and set it up.
== ==
No. There is no charge at all Twitter is free
Twitter is set up on a computer. However, you can use it on mobile internet or download apps (i.e. on an iPhone, blackberry etc) to use it.
Yes if you set up mobile Twitter. You can do this from your account settings.
text 'GO' to 86444 and you'll get a code. Go on web twitter and type that code in and set it up how you want it
Yes if you set up the texting service.
There's no way to know who has viewed you on Twitter. However, you can set-up your page as "private" to protect your tweets.
Ok, I'll ask her when I next see her.
You can set up as many accounts as you wish. Each one must be registered with a different email address though.
Yes, they can. Anyone can look at your pictures from Instagram on there unless you set it as private, tweets..etc. For an instance, when you look up your friend on twitter and look at her/his twitter, you can see there tweets and usually pictures.. that is how your's is as well
This isn't possible.