Since this is a hamachi server, it is completely free to play. You don't need to buy the real game, you can use a cracked version to play this server. I am going to explain to you how to connect to the server in a few simple steps.
1. You need to download hamachi so you can connect to the host. You can get it for free here.
2. You need to install it. This is pretty easy and I am not going to explain you how to do it step by step. If you can install and play minecraft, I am sure you can handle this in a few minutes.
3. After you install it, just open it and set a nickname for you. After you have a nickname press Network>Join an existing network.
4. There pops a window, which requires you to write an ID of the hamachi server and a password., so you need to add just ID. For ID you can use DragoncraftServer5, DragoncraftServer6 or DragoncraftServer7.
5. Now you just need to open minecraft, press multiplayer and add the server IP there. The server IP of DragonCraft is : 5.190.8.24
6. Now wait a few second to log in and here you are.
7. Have fun and read the rules before playing.
Hamachi Server
ID: DragoncraftServer5; DragoncraftServer6 or DragoncraftServer7
Pass: None
Server IP: 5.190.8.24
