on one of the bars is "widgets" it allows you choose many different short cuts to things/articles of interest.
How do I remove those that I no longer use?
Do you mean bookmarks on the Bookmarks Toolbar?
See Create bookmarks to save your favorite webpages and How do I delete a bookmark?
On my toolbar is a box called Widgets, it opens for you to select hundreds of shortcuts to things of interest..like Wall Street Journal, or info on sports, etc.
I did finally find "manage widgets" which allows me to do just that.