Where can I buy Astra Coins?

Hello, I'm interested in investing in Astra Coins but I'm not sure where to start. Could you please guide me on where I can buy Astra Coins securely and efficiently? I've heard of a few online platforms and cryptocurrency exchanges but I'm not entirely sure which ones offer the best service for Astra Coin trading. Are there any specific platforms or exchanges you recommend for buying Astra Coins? Additionally, are there any safety measures I should take into consideration while making the purchase? Thank you for your assistance.