Hi Oldtimer!

Here are 2 videos on how to rent cards on peakmonsters.com. Its a third party app run by steempeak.com.

https://steemit.com/splinterlands/@peakmonsters/2videos-to-explain-renting

You can view your collection and put them up for rent at the link below - they have created an automated rental market.

Login with keychain to see your collection and rent them here: https://peakmonsters.com/@oldtimer/collection

The only thing you may have to do first is to combine your cards to level them up because probably no rental market for level 1 cards, unless it is a gold card which comes at a higher level, all regular cards come at level 1. Combining them levels them up and this cannot be undone but it does increase the value of the card proportionally to the number you have combined. On peakmonsters you can also level them up.

Let me know if you have any questions.