Step 1:Login to your webserver and cd (change directory) to your opt directory.
Step 2: Find the latest bukkit build, and download that to your webserver using the wget command. Once you have bukkit, use the command java -Xms512M -Xmx1G -jar (name of bukkit version).
Step 3:Download the plugins compatible with the bukkit version you want into the plugins folder, and simply start the server up!
To have the server continue without you being on the console do the command: screen -dmS minecraft java -Xms1024M -Xmx1024M -jar (name of bukkit version) nogui.
Have fun killing creepers, punching trees, and finding diamonds!