How do I buy BMX coins?

Excuse me, could you please clarify the steps required to purchase BMX coins? I'm a bit new to the cryptocurrency market and I'm not sure where to start. Do I need to create a specific wallet for these coins, or can I use a general one? Also, are there any recommended exchanges where I can buy BMX coins safely and securely? Additionally, what payment methods are typically accepted for purchasing cryptocurrencies like BMX? Thank you for your help.