Dear Larry, This is our lucky day! There is a terrific article on growing Kale and Collard greens at https://extension.umn.edu/vegetables/growing-collards-and-kale. You do not say if you have gown them before where you are so I will start out by saying that one of the best things you can do is get a soil test so you know if any amendments are needed. Here is where to go for how to do that: https://ohioline.osu.edu/factsheet/hyg-1132. As an aside, you can always go , for reliable, research-based information to sites that end in .edu, .org, or .gov.
Happy growing!

Sorry, Larry, I missed the second part of your question. Here are two excellent articles which I hope will be helpful: https://www.washtenaw.org/DocumentCenter/View/16568/Guidelines-for-Fertilizing-Vegetables and https://ask2.extension.org/kb/faq.php?id=408910