This video defines a parabola and explains how to graph a parabola in standard form.
This video explains how to graph a parabola given in general form by rewriting it in standard form.
Parabolas (Part I) covers the equations for vertical and horizontal parabolas and graphing those parabolas.
Parabolas (Part II) covers writing the equation of parabolas given certain information like the focus and vertex or vertex and directrix.