Where can I buy Polkadex?

Excuse me, could you possibly direct me to where I might be able to purchase Polkadex? I've heard some promising things about this cryptocurrency and I'm interested in investing. Are there any specific exchanges or platforms that support the trading of Polkadex? Additionally, are there any requirements or steps I should be aware of before making my purchase? I appreciate your time and any information you may have to offer.