How could I invest stock in facebook with out a broker?

[A Nobody]

All stocks that is publicly traded must be bought/sold through a registred broker/dealer, this does not mean yu have to use an individual stock broker but you must use a brokerage firm.

Most brokerage firrms have minimums for purchases which is usually $500.

Pick a brokerage firm that offers on-line services (most of them do), open a new account on-line. Write a check made payable to the brokjrage firm and make sure your account number is on the check. Mail the check or deliver it to the brokerage firm, when the check clears you can make a purchase in your account, once again using the on-line service