The document discusses the key things the author learned from creating preliminary and final versions of magazine pages, including the front cover, contents page, and double page spread. Some of the main lessons learned were the importance of direct address and personalization over just object photos on the front cover, utilizing white space and ensuring cohesion through a consistent color scheme and fonts. The author also learned skills in Adobe InDesign like manipulating images, utilizing space effectively, and formatting text into columns for articles.