Reddit mentions of The Golden Dawn: The Original Account of the Teachings, Rites, and Ceremonies of the Hermetic Order

https://www.amazon.com/Golden-Dawn-Original-Teachings-Ceremonies/dp/0738743992/ref=mp_s_a_1_1?keywords=Golden+dawn+israel&qid=1565839265&s=gateway&sr=8-1

Best book you get on the topic. Written by Israel Regardie, an former member of the GD and personal secretary of Aleister Crowley. Shared a lot of the inner knowledge of the GD what brought him a lot of hate.

Book 4 by Aleister Crowley

The Book of the Law by Aleister Crowley

The Vision and the Voice by Aleister Crowley

Liber 777 by Aleister Crowley

The Book of Lies by Aleister Crowley

Gems From the Equinox by Aleister Crowley and Israel Regardie

The Golden Dawn: The Original Account of the Teachings, Rites, and Ceremonies of the Hermetic Order by Israel Regardie

The Complete Golden Dawn System of Magic by Israel Regardie

The Goat Foot God by Dion Fortune

The Sea Priestess by Dion Fortune

The Winged Bull by Dion Fortune

Moon Magic by Dion Fortune

Zanoni by Edward Bulwer Lytton

The Golden Ass by Apuleius

The Dream of Scipio by Cicero

Pistis Sophia by G.R.S. Mead

Secret Symbols of the Rosicrucians of the 16th and 17th Centuries by "a Brother of the Fraternity"

The Golden Bough by Sir George Frazer

The Voice of the Silence by H.P. Blavatsky

The Kybalion by "Three Initiates"

The Corpus Hermeticum by Hermes Trismegistus

The Book of Abramelin

The Three Magical Books of Solomon

I don't think "demons, aliens, and all things occult" are typically covered in a single, definitive work. Especially because "aliens" are usually part of UFOlogy and not occultism.

Regarding occult topics though:

- The New Encyclopedia of the Occult
- Three Books of Occult Philosophy
- Dictionary of Demons
- A Dictionary of Angels
- The Golden Dawn
- Gems of the Equinox
- The Complete Magician's Tables
- The Magician's Companion

There are literally hundreds of other resources available too, but these are the ones I could think of off the top of my head.

https://www.amazon.com/Golden-Dawn-Original-Teachings-Ceremonies/dp/0738743992/ref=sr_1_1?keywords=golden+dawn&qid=1571784127&sr=8-1

This edition:
https://www.amazon.com/Golden-Dawn-Original-Teachings-Ceremonies/dp/0738743992/ref=pd_sbs_14_img_2?_encoding=UTF8&psc=1&refRID=3CSTC1N873G04ATXD55P

is, I think the most up-to-date; though some of the reviews on Amazon point out that there are uncorrected and newly introduced errors in this 7th edition.
This edition (the 6th I think):
https://www.amazon.com/Golden-Dawn-Teachings-Ceremonies-Llewellyns/dp/0875426638/ref=pd_sim_14_8?_encoding=UTF8&psc=1&refRID=AM0NAE0V1C2359V57JAQ
Is the one that was readily available for the longest time.

I'm a bit old-school, so I tend to be of the opinion that all magick students should ignore chaos magick and other modernisms (since half of them aren't very effective without a solid foundation in at least ONE tried and tested system) and learn Golden Dawn and Medieval/Renaissance occultism first. You can learn the modern basics from Golden Dawn source material. If the Golden Dawn doesn't do anything for you and you're really more interested in going back to the source of ALL western occultism, then read Agrippa's Three Books of Occult Philosophy (the version with notes by Tyson because they're very helpful in explaining obscure references), and Aaron Leitch's Secrets of the Magickal Grimoires to get a good understanding of the technology of Medieval/Renaissance magick. It'll make the Key of Solomon and The Goetia make more sense. The Key of Solomon contains planetary sigils for working with Venusian spirits.

Get the following:
The Golden Dawn: The Original Account of the Teachings, Rites, and Ceremonies of the Hermetic Order https://www.amazon.com/dp/0738743992/ref=cm_sw_r_cp_api_zqnWBbPQ82981

The Essential Golden Dawn: An Introduction to High Magic https://www.amazon.com/dp/0738703109/ref=cm_sw_r_cp_api_yrnWBb98G4WRB

The Middle Pillar: The Balance Between Mind and Magic https://www.amazon.com/dp/1567181406/ref=cm_sw_r_cp_api_vsnWBbPTAX7M9

Here are the basics: https://www.youtube.com/watch?v=o8TqvabZ9vo

You might also benefit from studying the Golden Dawn Knowledge Lectures, the first of which is here. I recommend getting Regardie's GD book if you'd like to hear it from a more authoritative source, however.