Prior to the popularity of YouTube, game strategies were often shared by text. GameFAQ's was the most popular source to get walkthroughs and information about your game from other fans online. However, there were often also official strategy guides, physical books, to help you through your quest. As time went on these products became less financially successful and have mostly been phased out. While many efforts are currently being made by the community to preserve video game magazines the strategy guides are often overlooked.
If you have copies of guides not currently marked as preserved please consider following the steps outlined at scanning.guide and share your copy through The Internet Archive.
The below spreadsheet was created from lists originally compiled by Tyler "Teary Eyes" Anderson. This is obviously a work in progress as there are many guides created after the date he made his lists.