These are the training grounds. They will show you what to expect and what to do in the World. Follow the links and read about what it is you must do, and how to go about it.
This is what the a screen of the World looks like, and how you will interface to it.
Next you must see the images of what to expect. These are the items, creature and map tiles you will find in the World. Study them carfully, the more information you have at your disposal the better.
Last of all, you must understand the commands of the World, for without them you will be lost.