How to buy on Raydium exchange?

Good afternoon, esteemed crypto enthusiasts! Could you possibly elaborate on the steps involved in purchasing digital assets on the Raydium exchange? I've heard it's a popular decentralized exchange, but I'm still a bit unclear on the process. Would you mind guiding me through the initial setup, connecting a wallet, selecting a trading pair, placing an order, and finally, executing the transaction? I'm particularly interested in any security measures or best practices that I should keep in mind throughout the buying process. Your guidance would be invaluable to a newcomer in the crypto world!