How to buy MegaCoin?

Could you please elaborate on the process of purchasing MegaCoin? I'm particularly interested in knowing where I can find a reputable exchange to buy it from, what form of payment is accepted, and if there are any special requirements or considerations I should be aware of before making my purchase? Additionally, I'd like to know if there are any fees associated with buying MegaCoin and if there are any security measures I should take to ensure the safety of my investment.