It seems there are [insert w.e number here] different editors floating around... I've dabbled with a few... I dig Sublime. Came across some nice time savers...
In an html file:
typing html followed by tab will auto complete the basics of what's needed to get an html file started, ie: doctype, html, head, title, and body tags.
typing lorem followed by hitting tab will insert dummy text (aka lorem ipsum text) although that hipsum is pretty amusing to use, see: hipsum.co
div#wrapper + tab => <div id="wrapper"></div>
div.container + tab => <div class="container"></div>