Editing bookmarks in web browsers

Each web browser works somewhat differently, and their functionality can change with updated versions, so it is best to consult the software creators if you are having difficulty.  Below are links to some online assistance, but keep in mind that newer versions may be available.

Chrome: https://support.google.com/chrome/answer/188842?hl=en&ref_topic=14680

Firefox:  http://support.mozilla.org/en-US/products/firefox/customize/bookmark-options

Safari: https://support.apple.com/kb/PH21465?locale=en_US

Additional help can be found by searching YouTube.