How to purchase NEO?

Could you please elaborate on the steps involved in purchasing NEO? As a potential investor, I'm curious about the process and what factors I should consider. Firstly, could you explain the platform or exchange that I should utilize to acquire NEO tokens? Secondly, how do I set up a digital wallet that is compatible with NEO? Additionally, what are the transaction fees associated with purchasing NEO, and how do they vary based on the exchange? Finally, are there any security measures I should take into account to ensure the safety of my investment? I'd appreciate a comprehensive breakdown of the purchasing process.