Basically, you get model language from the classes on this site or from anywhere really and then you come here to try to use that language as you talk to everyone else.
So you might check out the classes on this site: http://www.eslgo.com/classes.html
After you look at the class, you would come to the forum and try to use some language from the class. Also, most classes have a message board thread for asking questions in case there's something you don't understand. If a class doesn't have a thread, it will as soon as I get around to making one. You can always reply here with a request if you have a class I need to make a thread for.
Let me give you an example. Let's say you visit this vocabulary class: http://www.eslgo.com/classes/sorting.html
One of the words from that class is 'daring'. You know this means 'bold and willing to take risks' so you go to the forums and you try to use the word 'dare' or 'daring' in a discussion. Or you go to the questions thread for the Harry Potter class: viewtopic.php?f=25&t=14052 and ask a question.
