Hey, do you NOT know what the palace is? The Palace is a visual chat where you can wear small pictures called "avatars." You use the avatars to represent yourself[most people don't call them avatars, they shorten it to "avs" or "props"]. If you just downloaded the palace here are some helpful tips.
To go to a different room in the palace click on the options menu in the top bar and select "Go To Room." If you have a slow connection the room list may take a few seconds longer to load than most people. To the right of the list there will be a number of how many people are currently in that room. To go to that room simply click on it.
To find a certain user go to the "options" menu again and click on "Find User." Another small box will pop up with a list of users that are on that palace. To go to the room that user is in double click on their name. To ESP them[private message them from the room you are in without moving] click on their name once and send your message. It should appear in italics in the top left. No one else can read that message you're sending except for the person you're sending it to. Also, on the find user list, to the right of the names will be the location of the user you selected.