A bookmark is a saved link to a web page that you want to revisit later. Just as a physical bookmark holds your place in a book, a browser bookmark marks a web page so you can return to it quickly without remembering or retyping the URL. Some browsers call this feature 'favorites' instead of bookmarks.
Creating a bookmark is simple. Click the star icon in your browser's address bar, or press Ctrl+D (Cmd+D on Mac) to bookmark the current page. Your saved bookmarks appear in the bookmarks bar below the address bar or in the bookmarks menu, giving you one-click access to your favorite sites.
As your bookmark collection grows, organization becomes essential. Most browsers let you create folders to categorize bookmarks - for example, 'Study,' 'Hobbies,' 'News,' and 'Shopping.' You can drag and drop bookmarks between folders to keep things tidy. Some people use the bookmarks bar for their most-visited sites (keeping it to 5-10 items) and organize everything else into folders in the bookmarks menu.
Bookmarking short URLs requires caution. If the URL shortening service shuts down, every short URL it created becomes a dead link - including any you bookmarked. This actually happened in 2009 when tr.im announced it would shut down (it reopened a few days later), putting many links at risk. For important pages, always bookmark the original full URL rather than the shortened version.
Modern browsers offer bookmark syncing across devices. Chrome syncs bookmarks through your Google account, and Safari uses iCloud.
Browser bookmark managers also support importing and exporting. You can export your bookmarks as an HTML file and import them into a different browser.