Long-tail cast on

A great all purpose cast on as it offers some elasticity.

M1L and M1R increases

These increases are commonly used when working top down sweaters, though there are many different ways to work increases in knitting.

Backwards Loop Cast On

This cast on is typically used when adding stitches onto the ends of a row.  For example, when knitting a top down cardigan, you may cast on for button bands after working some neck shaping.  It can also be used when creating buttonholes.

Join Sleeves to Body

In this video you'll see how to join sleeves to the body of a yoked cardigan when working from the bottom up.  This will be helpful if you're knitting Schoodic, Walpole or June's Favorite Cardigan.