How does Twitter work?

[Elle]

I recently got a Twitter. I don't get it. I get the followers and following, but I don't get anything else, like the replies. Why don't they show up? Please can someone give me a tutorial.
My user name is: cheesy_steele

[Ya Mums Vulva]

Geez you're a twit.

[coloradygrl]

If you want to message Sarah type @sarah to follow or search for trending topics type #tigerwoods and you'll look up all comments related to that. If you want to reply to a tweet, mouse over the right bottom part of the tweet and you'll see a reply button. I'm finally getting the hang of twitterland but it is a process look me up! Coloradygrl

[Jade_A_Cole]

twitter is amzing once you get used to it when you follow someone and you want to reply put a @ in front and then the persons user name eg. @Jade_A_Cole (my username) as for replies if your following the person it should automatically come up on your page... do you know about the trending topics if not they should be down the side of your page with your info and that have fun on twitter