The way the moon turn around the Earth is an ellipse. An ellipse is like a circle but with two centers.
The Earth is one of these centers and the North Node the other one - the void orbit center of the Moon.
The North Node (*) (it seems called True Node in English) turn in opposite direction of the others Planets (clockwise). Its revolution is approximately 19 years.
In the chart, it represents the evolution step, for example, each time it transits on the ascendant an event occurs permitting to evolve, to mature.
It's not really the first point to analyze.
As far I know, Lilith represents your fears.
(*) In french it's called the "Noeud Nord"