as a newbie, i don't know where to buy bitcoin and trade it from, i hope you can help me

When you begin to learn about bitcoin we have to learn about how to use it first like how to create a wallet on your own on exchanges and how to deposit and withdraw to your wallet, then get use to the patern of BTC daily before starting to trade, at the begining, don't spend too much, just use small amount of BTC to trade so you can minimize the risk of loosing all money, reference with what you learn on internet, then you can trade after few days, finally don't be greedy, sell when you have small profit because that is the better way to have experiences from trading.