How to buy AVAX on C-chain?

Could you please elaborate on the process of purchasing AVAX on the C-chain? I'm interested in understanding the steps involved from start to finish. Could you guide me through the necessary steps, including setting up an account, depositing funds, and executing the purchase? Also, would you mind sharing any tips or advice on ensuring a smooth and secure transaction? I'm a bit new to this and would appreciate your expert guidance. Thank you in advance for your assistance.