The shortcut is to click on the open book icon to the far left of the toolbar and this shows all your bookmarks.
When you're finished, just click on the symbol again and you're returned to the very website page you were just viewing.
The great thing about this is you can see all your BMs while never losing the website you are viewing ...
Don't forget that as your Bookmarks grow you can use the Search field box to the right, just enter a few letters that you think are in the name of the Bookmark and it's going to show you some matches as you type ... very handy!
I've got masses of bookmarks and this is the easiest way to quickly find one.