So I am here today to teach you how to install a Bukkit plugin for your CraftBukkit server for those of you who dont know. You might see some things on how to install them on the wiki but the tutorial there makes no sense to me. So if you think the same here is my tutorial in how to do so. It really took me five seconds to do it once I got the hang of it.
So just follow the steps below!

So first go on bukkit.org/
Next click on GET PLUGINS.

Next search your plugin in the search bar today I am getting Warptastic.
Then below the search bar the plugin(s) should show up.

Then click on the plugin you want that showed up.
Next you click the download icon in the right side.

Then once on that page there should be another download icon you should click on that.
If you clicked on it a .jar file should show up asking you to save it.
Click on Save File. Then all your folders will show up. Fine your minecraft server folder and then click on plugins and save it there.

Once your file is saved open your server up if its not up then wait for it to fully load then type in stop in the console to bring it to a clean stop.
YOUR PLUGIN IS NOW INSTALLED! Have Fun!

Now this is how to delete a plugin. This is less hard then that.

First open up your minecraft server folder and then click on plugins make sure your server is up too.
Next right click on the plugin folder you want to delete then a thing will pop up with options click delete.
Lastly right click on the .jar for the plugin too this is below your plugin folders. The same option thing will open up. Just click delete.

I HOPE YOU LIKE THIS TUTORIAL ON HOW TO INSTALL/DELETE A PLUGIN. PLEASE DIAMOND IF THIS HELPS! IF THIS DID NOT HELP YOU OR YOU DONT GET IT LEAVE A COMMENT WITH YOUR PROBLEM!