Hi, I'm 19 years old and have been interested in investing money in stocks for about a year now. I was thinking about using sharebuilder because they have a $25 promotional code, but I only want to put in about $100 to bring the total to $125. My question is, is it worth it? Is $125 large enough to start out with and make investing worthwhile? Any advice or guidance in a better direction would be much appreciated. Thanks!