Adafruit SD Data logger shield tutorial

I am trying to use the Adafruit SD data logger shield. I can find a file with keywords- no explanation, but I cannot find any info on the command structure or descriptions to help me understand the "wrapper". There are two code examples which are confusing to me. I have searched this forum and Adafruits to no avail. Please, does anyone know of a programming tutorial for this shield? Thanks a lot!

but I cannot find any info on the command structure

What "command structure"? There are methods in some class to be called. There is no "command structure".

or descriptions to help me understand the "wrapper".

What "wrapper"?

There are two code examples which are confusing to me.

Without knowing what is confusing to you, or what you understand, we are not going to be able to help you.

cappyjack:
I have searched this forum and Adafruits to no avail.

Did you try searching Adafruit’s tutorials? Or clicking on the “tutorials” tab on the product page?

You would’ve found this -