mcMMO allows for an RPG-like experience to exist in the world of Minecraft. This experience is complete with skill leveling, special abilities, brand new mechanics, and even changes in player-versus-player combat. Depending on how much a certain tool is used or a certain action is performed, players will gain experience that will eventually add bonuses such as double drops, rare drops, or ability enhancements.
The following skills can be trained in the mcMMO plugin:
mcMMO skills also provide the player with abilities. Abilities are the benefits granted by the mcMMO plugin, and they can be divided into two main categories, 'Active' and 'Passive' abilities. For an in-depth dive into these abilities, you can find them all here.
The mcMMO plugin also gives access to parties. Parties let you create a group of people you can talk to without public chat listening to your conversation, but they have other added benefits and features too. As you do things in a party, your party will gain levels. These levels will unlock many perks within the members of the party.

These are the leveling features of parties in mcMMO.

These are the commands that can be used for parties in mcMMO.
I hope this tutorial has helped you understand the world of mcMMO a little further!
Enjoy DogeCraft! -Joey