How do I add money to PancakeSwap?

Could you please explain the process of adding funds to PancakeSwap in a step-by-step manner? I'm new to this platform and want to ensure I'm doing it correctly. Do I need to connect my wallet first? Are there any specific cryptocurrencies that I should use? Are there any fees associated with adding money, and if so, how much are they? Finally, how long does the process typically take to complete? Thank you for your help.