First of all, you need to open Google Talk messenger from desktop shortcut icon or from start menu.
Once you are signed in, look for the contacts that are available. You can also add a friend on Google talk to have a conversation.
Select the friend from the contact list with whom you want to have a chat. After that, double click on that contact name, and a chat box will be opened on your screen.
Now, write your message, for instance, say ‘Hi’.
Press Enter to send your message and enjoy unlimited chats with your friends. In addition, you can share wp-content/uploads, pictures and other important documents by using Google Talk.