I have little doubt there will be a global currency alternative that is actually bigger than national currencies in the next 10-20 years. Bitcoin may not be it, but it will be in the history books for starting the path.
Get Bitcoin wallet. Purchase Bitcoin through Bitcoin ATM w/debit card or bank account.
I use coinbase which is both a wallet and ATM in one. But again, I only use Bitcoin for gray market purchases and gambling. I don't use it as an investment driver.