Advice needed for my first soil test

Hey guys, I'm using the local branch of the LSU Ag Center to get my first soil test done. I'm sending in a separate sample for my front yard, back yard, and side yard. My question is what all do I need to know. I'm going to attach 2 pictures, the first is what the basic test will include, and the second is optional testing done at an additional cost.

Thanks in advance for all your help. I'll be coming back with the results to get your advice (and interpretation!)