Succot, the Feast of Booths (Tabernacles), is a time to remember the Exodus, this remembrance is that God is both Transcendent and at the same time actively involved with, and in control of nature.
In order for us to experience the Transcendent control of God over nature, we leave the comforts of the homes of our own making, and dwell outdoors, back in nature, and under the dominion of nature's Creator.
This is why we dwell in a physical Succah, and explains why there are so many specific details in Torah Law that define what is a proper Succah, and how it must be constructed.
The Temple prayers called Hakafot, and the secret of trance meditations on the words, Ani V'Hu Hoshiana.
The four species are understood from the teachings of R' Recanati as being expressions of the letters of God's Name Y-H-W-H.
The Succah itself is seen as the union between Y-H-W-H and ADONAI (from the RiDBaZ).
The Ari'zal expands upon the metaphors of the holiday, this is explained with emphasis on channeling sefirotic energy through our personal ritual observance.
Practical matters about eating and sleeping in the succah, with mention of marital relations.
Concluding discussion about the energetic nature of the time period and how to tune into this through visual and ritual meditations.