"Pearls of knowledge" (more than "pearls of wisdom") are more formal, important and difficult to attain than "the skinny," "the scuttlebutt," and "the lowdown," which are cool, casual, and a bit transient or gossipy. ;-) "Pearls" may be used straight up, or in jest. A quick Amazon non-fiction books search would reveal that hundreds of technical and software programming fields, medical sub-specialty boards, as well as more general topics on parenting or self-help, have published concise compendia of "Pearls." Pearls are a career's checklist, a getting started guide, or a "Cliff's Notes," to a field of study's "Encyclopedia Britannica" or Department Library.
Aptly quoting: Managing Software Engineering Knowledge - Page 89
Aybüke Aurum, Ross Jeffery, Claes Wohlin - 2013 - Preview - More editions
The knowledge “dust” evolves over time into well-packaged experience in the form of knowledge “pearls,” a refined form of knowledge. An example is captured dialogues regarding technical problems (knowledge dust) that are analyzed and ...
Usage: The chief resident handed each of the anxious new interns a laminated pocket guide with important extensions on one side, and a few ventilator algorithms on the back, "A few pearls. We don't want to kill any more patients than necessary in the MICU this month..."