text: i just set up an acount with a broker and i have never bought stocks.....? i am 21 years old and i just set up an account with a broker.  i am clueless as to what to invest in.  i can only invest 30 dollars a week.  any tricks of the trade or possibly a good tip to get me started? any knowledge to help a young investor out? check out gnbt (generex biotechnology)