Extra cards in Oracle Mystifying Playing Cards

I'm new to divination with regular playing cards. I bought the "Oracle Mystifying Playing Cards" and I love the look of it. I'm learning with the hedgewytch method. I was just wondering if there was a way to incorporate the extra cards into the deck for readings. There's the 2 jokers and also a card which has "yes" on one side and "no" on the other. I've seen that some people use the jokers in readings tho I'm not sure how.

Hi, jokers can be used as a surprise, for good or bad. That yes no card ? if you want a yes no spread go for 3 red yes, 3 black no, 2red maybe 1 red as unlikely, 2black probably not, Hope that helps Mr green...