Planning an event or party is not easy. First, you should know what the event is for what will happen at the event. Then, you need to make sure you have somewhere to host the event. Where ever you have the event you should know the maximum capacity of the building or room your gonna use so you know how many people you can invite. Don't worry about capacity too much though. Next, set a date for the event then you can make a list of people to invite and start inviting.
(Let me think and I'll message you with more of the essay. Okay?)