I have managed to set up an account with Coinbase and I have verified my account and added my debit card to there system
So what must I do now to buy stuff with bitcoin? Do I need to top my coinbase account up from my debit card first before I can spend on the internet?
How do I buy stuff with it like say my ebay account or I want to purchase a train ticket online?
And how safe is my card from being hacked?

Thanks