If your intent is to someday become an Excel power user, you will need a solid understanding of all the lookup formulas available to you. Below is list of the most popular Excel lookup formulas with tutorials linked as reference.
My problem was a lack of understanding about how a screw joint actually works. It's not the threads biting into both pieces that secured everything in place. Rather, the strength of a screw joint comes from the threads pulling the screw through the bottom