Cardano is a blockchain platform similar to Ethereum.
Unfortunately, right now, there is no easy way to buy Cardano coin with a credit card in the USA.
You will first have to buy BTC with your credit card.
BitPanda is based in Austria and is a crypto brokerage service. You can buy bitcoins with your credit card if you live in Europe for low fees.
Once you have the bitcoins you can use Binance to convert your bitcoins to Cardano coins in about 10 minutes.
Again, if you live in the USA, Europe, Singapore or Australia then you must first buy bitcoins with your bank account using Coinbase or a similar service. Once you get the bitcoins from Coinbase you can use Binance (review) to convert the bitcoins to ADA.
If you live in any other country then you can use our home page to find a Bitcoin exchange in your country that accepts bank transfer. Then once you buy bitcoins you can convert them to ADA within 10 minutes.
Before we move onto other options:
Never store your Cardano coins on an exchange!
Always withdrawal your Cardano coins to an offline wallet like the Ledger Nano S or any other wallet that you control. Ledger does not yet support Cardano although is expected to support it soon.
There is no way to directly purchase Cardano with cash. Not even any ATMs support buying Cardano.
You can use Binance to easily exchange bitcoins for Cardano.
BitPanda allows Europeans to buy Cardano directly with Skrill.
Cardano price passed $1, despite there not being a working product or blockchain. This is somewhat worrisome and Cardano is getting hype with no product.
Cardano, at time of writing, is worth over $1.05.