Bookmarks
You can now Bookmark your favorite Questions, Dashboards, and Collections to access them later from the sidebar. Bookmarked items also get a boost in your search results.
You can Bookmark a Collection by selecting the Ribbon icon near the top-right of your menu.
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A Question can be Bookmarked by exposing the Editor Menu drop down at the title of the Question, then selecting the Ribbon icon.
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To Bookmark a Dashboard, expose the extended menu by selecting the triple-dot icon, and then Bookmark.
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Bookmarked items will appear at the top of your sidebar (exposed by selecting the hidden hover-over icon), above your Collections.
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Bookmarks are personal. Other users cannot see your Bookmarks. If you want to highlight something for everyone, you’ll want to put it in an official Collection and/or pin the item in the Collection.