How to purchase Casper?

I'm curious about the process of purchasing Casper. Could you walk me through the steps involved? Firstly, is there a specific platform or exchange that I should be using? I've heard of some popular options like Binance and Coinbase, but I'm not sure which one is best for Casper. Secondly, what are the necessary steps to set up an account on one of these platforms? I'm new to cryptocurrency trading, so I'm a bit unfamiliar with the process. And finally, how do I actually make the purchase? Is it similar to buying stocks, or does it require a different method? Your guidance would be greatly appreciated.