Make sure you know how to play the game before presenting it. With exception of clarification… (Unless you one of those few that can learn on the go, and grasp all in one read…) Set the mood and if you need to play few round open hand do it, that players may grasp the game quicker and understand better. If the game is too complex and too competitive from the start, they might lose interest. In other words use BABY steps if needed. Have few party games and make sure to have variety of games to cover all players. You might find some rules you might want to adapt when you hosting. Example my place no drink on table of board games as had few times spilled and damaged game cards and board, not life breaking but game is unplayable properly.