Magick Squares and Enochian Tablet

The magical squares, when letters, correspond to the Hebrew letter, and number of each letter. All the squares should add to the same number. The squares themselves have a number that is representative to planetary alignments. How does this size up? Are they actual numbers of angles? Are they related to the zodiac? Are they descriptive of attributes of the spirit being evoked?

Then the Enochian table of union is mentioned. How do you use it?