I for one am training on 50NL tables at the moment.

For the love of God at least deposit 40 bucks and play nanos. You'll have 10 buyins at 0.02/0.04, if you have read anything at all about poker you should be able to not go busto.

By having a couple of bucks at stake you'll learn something very important; the gruelling feeling of losing money and how to deal with it. No matter how good your play money friends are, you won't get that feeling.