You can start trading with as little as $100 at AvaTrade, and while you certainly won't get rich when you trade such a small account you will receive very valuable experience. As time goes on you can also add to that amount, growing your account through deposits as well as the potential profits from your trading activity. Over time as your account grows you will find yourself able to take larger positions, which is also a good way to grow as a trader rather than jumping in and trade a large amount without experience.