Private Mine
Every user gets one private mine when they first join. This is your personal mine that you level up. Mines start at 10×10 mineable blocks and progressively expand as you /rankup.
Rankup
Rank up by running /rankup or /rankupmax. You must meet the required money and blocks-mined requirements — view them in /ranks.
Prestige
Once Rank 1000, you can prestige to have your rank reset back to 0 while keeping your pickaxe and all enchants unlocked. Prestiging unlocks new enchants on your pickaxe/tools that you would not otherwise have been able to unlock or obtain.