Every visitor to Buy Bitcoin Worldwide should consult a professional financial advisor before engaging in such practices. Your capital is at risk. There are hundreds of platforms to choose from, and they can be separated into three main categories: Bitcoin brokers Brokers offer the quickest and easiest way to buy Bitcoin, allowing you to pay for your digital coins using fiat currency like AUD or USD. Also, one can deposit and withdraw funds directly from the mobile app of CEX. This step-by-step guide will show you how to use Coinmama.