It really is a personal thing, and depends on what you are "ready" for...the deeper you get into this, the more all encompassing it seems to be.
IF you are into delving into more of what and who might be "behind" these craft, intelligences, whatever...
Richard Dolan's work is exceptional, especially his last two books.
The Gods of Eden can be found online for free. This mentions the vast history of ET involvement on planet Earth.
I find the chronicles of contactees and the information they have been given to be truly fascinating.
Alien Interview is by Leonard Spencer, and can be found on his site or other locations online. It is the supposed transcripts of the interactions between a nurse and the Roswell alien recovered in New Mexico. The text is both enlightening and disturbing, as it gets deeply into earth history, how celestial elements are created, where our animals and flora came from, the reality of Lemuria and Atlantis, and warnings for man regarding reckless use of nuclear weapons.
Defending Sacred Ground is a collection of Alex Colliers lectures and talks about his contact experiences with Zenetians from the Andromeda Galaxy. As far back as the early to mid 90s, Alex was sharing revelations of ET influence on Earth, their many bases here, why we actually went to the moon, warnings of h1n1 and ebola scares to manipulate the population, and an explanation of the formation of the NSA YEARS before Snowden came on the scene.
Many of the Dolores Cannon books can be found online as free pdfs now, and most of them deal with her clients recall of either contact, or past life memories of being from off-planet. Keepers of the Garden and The Three Waves are pretty cool and quite informative.
The Lacerta Files was awesome, and very informative. For those of you that think you have the "reptilians" pegged, after you read it, you'll see that just because someone is reptilian doesn't mean they are evil. There are several reptilian species, many of which are from here on Earth.
Don't count out the several writings from the 1950s contactees including Daniel Fry (White Sands Incident) and George Van Tassel, nor the information included in the Friendship movement out of Italy.
Reading about craft and sightings are awesome, but I really feel the most important information can be found in many of the contactee readings. Many more of these, I've noticed, can be found in the "books" area of the exopoliticshongkong site.
Yes, I'm sure several could go on and on and on about what they heard about who probably hoaxed and lied about what, etc. That's just going to happen.
Our intelligence agencies oftentimes worked non-stop to discredit these people because they didn't want them to be too influential. Collier got harassed alot.
The dirty secret was that at the same time, they were monitoring them quite heavily because they knew contactees had knack of knowing quite a bit of pertinent and sensitive information. (this still goes on)
Few know that George Van Tassel was warned during one of his contact experiences about the impending UFO flyover that happened in Washington DC during the weeks of July of 1952. He was told to send letters to media as well as officials in DC. Between what he knew, and the torsion field technology he was working on (which, yet unfinished became what is now known as the Integratron), he was definitely a man of "interest" to intel and the growing military industrial complex. It might explain his untimely and very strange passing as it happened.
I really feel for the deepest understanding of this subject, and why it's so important, listen to the contactees. And listen to your own heart and discernment. Just because someone told you to think a certain way doesn't mean you have to obey them. Review the information first, then think for yourself.
Hope this helps.
