Since Revolut is not a brick & mortar bank you can get a free card with your smartphone and a proof of ID!
The first step would be to download the app on your mobile using the link below:
Once the app is downloaded, you will need to verify your identity and email with a few quick and straightforward steps.
Your first top up should be a minimum 10 euros/ 10 USD and would allow you to get a hang of the app. It's just like using your existing Credit/Debit cards - just a lot more amazing with all the Revolut analytics, payment abilities, forex and enhanced card security.
If you want to learn more, find out all about Revolut here: The ultimate Revolut Guide