How to buy TIA on Celestia?

Could you kindly explain the steps involved in purchasing TIA tokens on the Celestia platform? I'm particularly interested in understanding the prerequisites, such as setting up a wallet and funding it, as well as the specific process of navigating the Celestia interface to initiate the purchase. Additionally, I'd appreciate any information on transaction fees, security considerations, and any recommendations you might have for a smoother and safer experience. Thank you for your assistance in this matter.