Explained in the very first sentence, "This is the quarterly links ‘n’ updates post, a selection of things I’ve been reading and doing for the past few months."

I missed that sentence too. I guess the large heading starting with "(1)" drew my eyes first and felt like the natural place to start reading, while the short sentence or two above it in smaller text subconsciously felt skippable (and was skipped). Even when I went back to read the first sentence, I had to kind of force myself to read the stuff above the first large heading. How odd!