Credit Card Discussion

I need a card that I can use instantly once I apply for the card ONLINE. Like for example if you go into Home Depot and apply for a card they give you your card number instantly so you are able to shop in their store but I need something I can put through online.
If [...]

I don’t have a job or a bank account right now and I’m wondering if I can get a credit card, and how much time will I have until I have to pay the credit card company after buying stuff ? How can I get a credit card? Can I apply online?
I’m over 18. I’m [...]