Where Can I Go To Buy Stocks Online?

hey am 16 years old and i would really like to start investing money since alot of stocks are at there low points liek gm ford i would liek to no where i can mabey day trade or where i can go to buy stocks i would rather do it myself i dont want to pay a broker for trades and for buying and selling where can i do it online thats easey and if i have to get a stock broker how much would it cost me

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