Okay here's what's done and working so far:
Land buying and selling.
Can only build on your own land.
SellVehicle Event.
SellItem Event.
Default Mandatory Minigame.
I'll be starting the mining job next, then the soldier job, then probably start working on the crime/police system before going on to other jobs and features.
Sounds good :D I actually have to go now :(
Otherwise, you should also make a /help or /manual command before starting all of that major work. Mainly so you have most of the help file finished, and its not all of a "Remember each command" thing for you in the end when you go to make the /help command.