The document provides tips for effectively using Google and Wikipedia as reference tools. It discusses how Google generates billions in revenue through targeted advertising while tracking user data, whereas Wikipedia relies on donations and volunteer contributions. The document then lists 10 tips for using key features of Google like advanced search operators, built-in conversions, Google Translate, Google Patents, Google Drive, YouTube, and Google Maps. It also provides 10 tips for using Wikipedia as a starting point, reference tool, for featured/good articles, pop culture, language learning, local perspectives, promoting resources, statistics, related Wikimedia sites, and as a hobby.