Need help with plugins in-game...

Hi, i'm kinda new to the Bukkit World, so you can pretty much say that i'm a noob at all this. Well, i wanted to make a city server, and in matters of construction, it's fine. But i want to use plugins, which was the point of getting Bukkit.

These are the things in my plugin folder:
[Folder] CraftBukkituptodate, [Folder] Essentials, [Folder] Essentials GeoIP [Folder] iConomy, [Folder] Permissions (empty), Chat manager, CraftBukkituptodate, essentials, essentials chat, essentialsgeoip, essentials protect, essentials spawn, ibicf (i believe i can fly) and iConomy.

Now, I have no idea how to use ANY of these things. They said they needed Permissions, I downloaded it and I didn't understand it so I deleted it. But there was still a Permissions notepad and i wrote ibicf in it, but it still didn't work.

So what i'm asking is, how do I use these plugins?
Oh wait, something else.

Since i'm trying to make a city, i need to make plots, so is there a specific way to block building on land from players who don't own it? How could i select this land? And how do I sell it?

Thanks in advance!

 

You are gonna need Permissions for most of the plugins.
You can find out how to use Permissions here.