Shortcuts

CTRL + p - Search files.
CTRL + Shift + p - Commands.

CTRL + d - Select duplicate values.

ALT + Up or Down - Move line up or down.

ALT + SHIFT + Down - Duplicate line.
ALT + SHIFT + Right - Select everything between brackets.

Zen Coding

table.table.small>thead>tr>th*4

results in

<table class="table small">
    <thead>
        <tr>
            <th></th>
            <th></th>
            <th></th>
            <th></th>
        </tr>
    </thead>
</table>