Start at studying about it then work hard. You should know it first then invest.
Buy them with your fiat money. This is the fastest but most expensive way to earn. If you have some time and a highly ranked account, you can easily make more than $30 a week, just by posting. You could also gamble or scam someone, but that's highly discouraged, as the potential trust you lose is worth more than your potential to scam...
What is fiat money @jkrules? how is it that it is that fastest way to earn, i really don't know what fiat money is, could you please explain it here and if ever please teach us how to use it. Thanks
By fiat money he means the original money the currency used in your country or anyone's country. And by the fastest way he meant that you don't need to do any hard work for that, you just need to buy bitcoins with your money and that is all.