The keyboard short cut is Ctrl B . This will take you to the Bookmarks window. You can delete folders in the same way. Use the Shift and Ctrl keys to select multiple bookmarks or folders in just the same way you would in any other Windows file management task. When to Bookmark People use bookmarks in all sorts of different ways.
Some people only keep bookmarks for the projects they are currently working on.
Others keep multiple bookmark files to store just about every page they have ever looked at. Some 'middle road' between these two extremes is probably best. At the very least you should keep a list of the search engines you find most useful. Bookmark those pages you might want to come back to later. It is best to over-bookmark than use the bookmarks feature too sparingly as it is usually easier to delete bookmarks you don't want than it is to find a specific page again.