I have not seen that tutorial and your description is not making it clear to me what exactly your are trying to do. Can you possibly make it a bit clearer? Maybe a screen shoot and some annotation?

For vert, curve and grid snapping you hold the v, c, and x key while middle mouse gesturing over the component or grid you want to snap too. You can constrain the movement to an axis by highlighting the axis you wish to strain to on the move manipulator before snapping.