While nomad living to some can be fun for a while, eventually you'd like to settle down and setup camp at a permanent place. Once you have your home established with the command /sethome and are ready to venture further out in the world, it's going to be important that your newly made home is protected, and the same goes for your chests and animals.
To start claiming your base, you're going to need to craft yourself a Wooden Shovel. Upon holding the shovel, you'll be notified in Chat, about how many Claim Blocks you have available at your disposal. These Claim Blocks, can be acquired over time by simply playing on our servers. With us so far? Great!
Now that you have your Wooden Shovel, you have to Right-Click from one corner to another. Please note that it has to be minimum 10 Blocks or more before the claim is established. After your claim has been made, the amount of Claim Blocks required to make that claim will be taken from your account. Now you have a Safe-Space for you to store your items and continue to build your house without the worry of being griefed.