How can I buy Flow?

Could you possibly explain to me, in layman's terms, the process of purchasing Flow? I'm quite new to the cryptocurrency world and am a bit overwhelmed with all the different platforms and procedures. Could you break it down for me step by step? Is there a particular exchange or wallet I should use? Are there any safety measures I should be aware of? I'd really appreciate your guidance on this matter as I'm eager to get started in investing in Flow.