The document provides a comprehensive guide on using the keyboard shortcut 'ctrl + f' for finding text in various applications and web browsers on Windows and Mac. It explains the functionality of the shortcut, how to access and use it in programs like Word, Excel, and PDF readers, as well as how to find items on an iPhone using Safari and other browsers. Additionally, it notes that while there is no direct equivalent to 'ctrl + f' on iPhone, methods are provided for searching webpages effectively.