How do I buy OMNI crypto?

Could you please elaborate on the steps required to purchase OMNI crypto? As a potential investor, I'm interested in understanding the process from start to finish. Do I need to create a cryptocurrency wallet first? Which exchanges offer OMNI trading? Are there any fees or minimum requirements to buy OMNI? Additionally, is it recommended to do any research or consider specific market conditions before making a purchase? I'd appreciate any insights you could provide to help guide me through this process.