On Windows or OSX, the keyboard shortcut Ctrl + D or ⌘ Cmd + D respectively.
You can get this popup to appear at any time by navigating to the bookmarked page, and then clicking the star icon. If the bookmarks toolbar is not active, right click the title bar at the top of the page and select “Bookmarks Toolbar for easy access to your bookmarks.
You can also click on the Show sidebars button (highlighted in red on the picture) to display the bookmarks sidebar. The keyboard shortcuts Ctrl + B or ⌘ Cmd + B can also be used to open the bookmark sidebar on their respective platforms.
New tabs have a bookmark button that will bring up a list of bookmarked pages. You can remove your bookmarks from either the search bar or new tab interfaces.