Here you will find information about the server like plugins you can interact with and what commands you can use:-

When you join for the first time you will be given a basic 'starter' kit with some useful items do get you on your way.
At the Spawn area you will find a shopping district where you will be able to buy items from member shops and even buy your own shopkeeper and make a profitable shop.
Once you have left the spawn area you can go on your merry way and find a place and setup camp.  You can visit the Earth Map (dynmap) to find your home country or just build anywhere else.
If you like to be part of team, you can create your own or join up with other members to build up a great team base !