How do you rent cards in Splinterlands?

Could you please explain the process of renting cards in Splinterlands? I'm interested in understanding the steps involved, from identifying the cards I need to finding a reputable renter and finalizing the transaction. Is there a specific platform or marketplace where these rentals typically take place? Additionally, how does the rental fee structure work, and are there any precautions I should take to ensure a smooth and secure transaction?