Cosmological Qabala Primer
This website cannot possibly explain all of qabala, especially when it comes to qabalistic cosmology -- the creation and ordering of the Universe, and the creation of Man. Cosmological Qabala is like a massive theological hologram: When you look at it, it's relatively simple to see the picture, but when you cut it up, you realize that each individual piece contains the whole of qabala. Thus, cursory examinations tend to make little sense and can appear full of contradictions. For that, I apologize, but can only suggest you consult the recommended sources to remedy the situation.
there was AIN, a complete void and vacuum. Not simply "nothing," but not even the existence of "nothing" itself -- absolute, incomprehensible nada. For convenience, AIN is God.
In terms of the Hebrew letter-numbers, these relate to following groupings: