Casting On

The Knit Stitch

This tutorial is from Knitting Tips by Judy

Other Knit Stitch tutorials can be found here.

The Purl Stitch

Another tutorial from Knitting Tips By Judy

Binding Off

Blocking

Knit Picks explains how to block a sweater. Check out their other tutorials on Youtube.

Blocking Lace

Ribbing

A ribbing tutorial from Gingerly4it

Knitting in the Round

(in three parts from StitchDiva)

Cable Knitting

Leisure Arts show you how to knit cables.

Increasing

Crazy Aunt Purl teaches you a method to increase a stitch.
Here's a bunch of increasing tutorials on youtube.

Decreasing

Cyberseams.com presents a couple of decrease methods for knitting.

SSK Decrease Video Tutorial from Cat Bordhi