An inquiry was made for an online resource that provides an overview of units, unit systems, dimensions, and dimensional analysis, aimed at those with some prior knowledge. A reference to a 1922 text by P.W. Bridgman on dimensional analysis was shared. The discussion highlighted skepticism about the need for extensive textbooks on the topic, suggesting that a concise summary could suffice. Recommendations included checking introductory physics books, specifically mentioning a chapter in "Mechanics" by Landau and Lifgarbagez that relates to dimensional analysis. The search continues for a suitable online PDF or summary that meets these criteria.