Epidural?

Can anybody advise me on epidurals? This is my first and I'm debating on having an epidural when I go into have little one. I've been told that there are different types of epidurals. Is this true? Does it bed bound you? So you can't walk or stand up after you've had it? How much does it hurt? I've got a problem with having needles jabbed into me. Do they numb the area before they give the epidural? Sorry for all the questions. Thanks.