Go to our Downloads section and find a mission that you want to play (which is probably in a .zip file). Download it. Extract and read any text file. If the mission is a .map file then extract it into the Pharaoh/Maps directory, start Pharaoh, and find it under Custom Missions. If the mission is a .sav file then extract it into the Pharaoh/Save/"your family name" directory, start Pharaoh, and find it under Load Saved Game.