Bukkit

The config file may seem a bit daunting at first, however, hopefully this will help clear it up.
The config class will soon be cleaned up to make it easier to use.
At the top of the config file you should see something like this:

Here you can edit the names of each class for example you could rename the Enchanter class to Magician... if you really dont like my naming :P
Next up you will come to something simular to this:

This lists the people that are in each class. It is recommended that you dont change any of this as it will do so automatically when people use commands such as /class leave
Next you get to this:

Again, it is reccomennded that you dont change this through the config as it can be done easily through commands, however if you know the exact co-ordinates of the first spawn then it can be changed through this.
Now you get onto the Class Customisation, at the moment this is done through item ID's, you will get a variable such as Cant Craft, and then the name of each class followed by a list of the item ID's that they Cant Craft, for Example:

Here you are able to add or remove item id's that the Archers cant craft.
You can find a list of Minecraft Item ID's here NOTE: YOU DO NOT HAVE TO USE ID's ANYMORE. YOU CAN USE THE DEFAULT NAMES OF THE MATERIAL YOU WISH TO PLACE. FOR EXAMPLE, INSTEAD OF 265 FOR IRON, YOU CAN JUST TYPE: IRON_INGOT

Hopefully that has cleared up some of your questions and queries on the config file and how you customise classes. If you still have any questions you can send me (multidude) a PM on comment on this page :D