Depends how big it is (Buy-Ins, people) I wouldn't post it on Facebook or Twitter or anything (depending on local gambling laws) have it be BYOB, Make sure you have the prize structure all figured out. Make sure you don't get robbed a good host always makes sure people don't get robbed at their parties..
Have a good deck of cards maybe 2 or 3 changeable decks (different looking) to help prevent against deck switching (cold decking) Have a good chip set maybe mark the chips so no one sneakily brings some chips from home has been a lot of that happening at casinos
Felt or something that makes looking at the cards and playing with the chips feel comfortable. nothing worse then trying to shuffle a deck or look at your cards and you cant get a good grip on them because the table is too slick.
Have a set of rules ready to go just incase there is any confusion or confrontation about what has happened in the game or hand. Good money management make sure you keep a record or something of how many people have entered and how much cash you should have, no one wants to worry later that some of it may be missing.
Most important rule invite me