How do I fund my coin wallet?

Could you please elaborate on the process of funding a cryptocurrency wallet? I'm a beginner in this field and am not quite familiar with the steps involved. Could you walk me through the process step-by-step? I'm particularly interested in understanding how to safely transfer funds from my bank account or another digital wallet into my coin wallet. Additionally, I'd like to know if there are any fees associated with this process and what security measures I should take to protect my funds. Thank you for your assistance in guiding me through this process.