Instructions
Connect your PS3 to the Internet using an Ethernet cable or by configuring a wireless network in the Settings menu.
Use your controller's left thumb stick to select "PlayStation Network" on the XrossMediaBar (XMB) on your home page. Press up or down to select "Log In." Click "X."
Select "PlayStation Home" after logging in to the PlayStation Network and click "X." If this is your first time using PlayStation Home, you'll have to wait while it is downloaded and installed.
Select a public environment from the PlayStation Home menu to get started. You can choose the Mall, the Central Plaza, the Movie Theater or any of the other available places.
Press start and use your thumb stick to select "Avatar." Customize your avatar by selecting a gender, facial features, body type, skin and hair colors, clothing and accessories. Exit the menu by clicking "O" when you have finished creating your custom avatar.
Use your left control stick to walk around the PlayStation Home environment. You'll notice other avatars walking around as well. Approach an avatar you'd like to interact with to view their PlayStation Network username.
Press "R1" to open a list of gestures you can do to get yourself noticed. You can strike a heroic pose, wave, sit down on the floor or even dance. Check through the list to get an idea of all of the gestures you can make.
Press the triangle button to open the on-screen keyboard to text chat with people in PlayStation Home. Type a message and try to get people to respond.
Hold the "R2" button and speak into a connected headset to voice chat with people in PlayStation Home. They can respond with their own headset or via text.