get an account with schwab or fidelity or tdameritrade, read Jim Cramer's investment books for starters
start with a website like TD Ameritrade or Etrade and start an account with them
You fill up form, give some identity / address proof and link your bank account. Then, you can start investing in stocks
By buying company stocks. You can call a stock broker for advice and making trades or you can open an on line account with Etrade or Fidelity (or others). You must be 18 or have a custodian on the account.
