Hello, how are you?
Welcome to Italki. I hope you're going to enjoy a lot and make many friends.
You should go: http://classic.italki.com/partners , choose somebody and send him/her a message.
Also, you can correct some exercises (related to your native language), answer to the questions, participate in the discussions etc.
If you need classes, you can book them right here: http://classic.italki.com/teachers/professional
We are all here to help you.
Have a nice day.