Jobs is one of the main ways to gain money of the server, depending on what job you join you gain money from doing certain actions. As a guest you are only able to join one job, but the more you rank up the more jobs you will be able to join.
Jobs work with a leveling system, for each action you gain a certain amount of jobs xp. Each time you rank up your job, you will be gaining more money and jobs xp for that job. leveling up your job will also increase your jobs limit. Your jobs limit is the maximum of money you can make in 8 hours, once you've reached the limit you will no longer be able to make more money (but still gain jobs xp) until those 8 hours are over.
/job Shows a GUI of all the available jobs, left clicking the job will provide more info about the job. To join a job right click the job in the GUI, to leave a job middle click the job.
/jobs limit Shows the maximum amount of money you can make in 8 hours.
/jobs stats Show your jobs levels and the xp. Left clicking the xp bar will give you the payouts for each action.
/jobs gtop Shows the global top list of jobs. The level is calculated by counting all the separate job levels together.
Shows the top players for the given job.