Aw thank you, I'll do what I can to give some recommendations! Hopefully they'll be useful to you... I sadly don't have a formal reading list of recommendations yet, as I haven't been able to do as much reading as I'd likely lately, and I'm hesitant to recommend books I can't confidently vouch for. However, here's some things I do recommend! These are with the assumption that as you said, we have similar tastes/ideas when it comes to Luciferianism.
The one book I do comfortably recommend to people new to Luciferianism is Kosmology: Luciferian Philosophy by Jeremy Christner. He is admittedly far more Gnostic in his Luciferianism than I am (if memory serves he considers Lucifer and Sophia two aspects/forms of the same entity). Still, I'm yet to find a book that has an identical view of Luciferianism as I do, and I think what he has to say about the more philosophical side of things is really worth reading, since it explores a few of the ways Luciferians can push themselves towards a seeking knowledge and self betterment that weren't completely obvious when I was starting out.
Paradise Lost by Milton is another incredibly popular recommendation for probably obvious reasons. It's arguably the most influential text on how we see the figure of Lucifer today. However, it's also a very very long poem written in a pretty unfamiliar style. If it's more than you can tackle at the moment, I'd honestly suggest looking into things like the Sparknotes quotes or videos that discuss its themes or impactful scenes, like Satan's speech to his followers after their fall.
I personally found the Book of Enoch to be a useful one since my Luciferianism includes the Watchers, or more specifically Azazel, though if this isn't something that interests you there's no real harm in skipping it? Though I found it an interesting read, and even if you don’t see their motives as selfless, the sharing of divine knowledge with mankind that the Watchers did before their punishment for its results does feel rather Promethian, which is one degree of separation away from being generally Luciferian... or is one in the same. Your mileage and tastes may vary,
For general recommendations I'd suggest looking for anything with Promethean themes, reading a little Canaanite mythology (the story of Attar trying to claim Baal's throne is especially interesting to me) and familiarizing yourself with the concept of Gnosticism. While I'm not a huge fan of most of it, Gnostic ideas have influenced a lot of Luciferian ones, and some people you encounter will outright identify as Gnostic Luciferians. And you might decide you like what you see! I'm not the authority on what should and shouldn't be allowed in a very personal religion. However, I find that anything that pushes the concept of Lucifer as a liberator from an evil false God... or not-false but still evil God... to be pretty uncharitable to a good many religions I don't have an issue with and thing some people are needlessly hostile towards.
While I have not read either in depth yet, as Cain and Tubal-Cain are not figures that particularly interests me at this time, I've had the Pillars of Tubal-Cain by Nigel Jackson and Michael Howard recommended to me, and I've found some interesting bits in the Psalterium Caini/Psalter of Cain by Andrew Chumbley. You might need to get a bit creative about reading them if they interest you, since both are out of print and tend to be wildly expensive in the second hand market.
I would humbly discourage reading too much by anyone that pushes a flavour of Luciferianism that uses Lilith or Qlipoth, if you aren't culturally or formerly Jewish, as both (no matter how many people try to claim otherwise) are deeply entwined with the Jewish faith and Jewish mysticism. As someone who is culturally and formerly Christian, I don't feel comfortable touching either with a ten foot pole, as I strive to be respectful of closed and semi-closed practices... which Judaism and the practicing of Kabbalah are. While I've seen a lot of arguments concerning the potential validity of Hermitic Qabalah, with the assumption being the only similarity is its name, it's not a topic I feel equipped to handle... and in the case of Qlipoth especially, it feels like an uncomplicated pilfering of Jewish ideas for the sake of having an edgy magic system.
I've also not been terribly impressed with Michael W Ford's writing, as despite his prolific nature within the publishing world I'm just not really a fan of his books nor some of the choices he's made. I considered leaving him off, but he's one of those names that just keeps coming up if you research Luciferianism, so I thought it worth giving a disclaimer.
- I'd recommend trying to read as much as you can in subjects that interest you as possible. Ones I've found particularly of interest are religious history, mythology, philosophy, and those that are related to the fields of magic I'm interested in (as my dislike of Ford's Luciferian Witchcraft and other peoples' weird Qlipoth grimoires means I've been left to form my own magical path... though magic is not mandatory to being Luciferian by any means). There are, however, no unworthy areas of research when dealing with a religion that pushes for enlightenment and self betterment.
- I mentioned this in passing up in the books section, but if magic is a thing that interests you, do remember that it doesn't need to be explicitly Luciferian in nature! There are many ways you can merge a magic system with your religious leanings, or keep the two separate, and with the possible exception of trying to work with notoriously militant Christian spirits like St Benedict or St Michael, there's a lot of flexibility. I even work with St Expedite, as he doesn't seem to hold strong opinions on it, and I've considered keeping up some planetary magic that employs some of the lesser known angels... though my relationship with Azazel makes St Raphael incredibly off limits, as it seems like a dreadful idea to appeal to the angel that imprisoned my tentative teacher. While ceremonial magic that involves demons is of course popular, other things like forms of chaos magic, folk magic, and traditional or folkloric witchcraft are other fine choices. Though again, and I cannot stress this enough, you do not need to pursue magic if it's not something that interests you to be a Luciferian.
- Not a formal book recommendation so I'll say this down here. Consider alternative methods of exploring Luciferian ideas. For example, modern poetry can also be a lovely and less thought of means of exploring religious ideas, and surprisingly, Luciferianism especially. I've mentioned it in other posts, but my all time favourite is Imagine Lucifer by Jack Spicer, though if you look up poetry on my blog you'll find lots of other examples. There's also a number of research papers that explore these ideas, such as the one on Romantic Satanism by Peter Schock, but you may again need to get clever with how you investigate them since academic papers can be incredibly expensive to buy. Someday I hope to make a proper list of all the research papers or collections of essays I've found that are worth reading... but I need to actually finish them all first.
- At the risk of overstepping... I would suggest coming to terms with your feelings on other religions quietly and respectfully. A lot of "Left-Hand Path" religions or beliefs can be very openly hostile towards other religions in a way that's sensationalizing and unflattering at best and outright bigotry and regurgitated hate speech at worst. I fully believe there is a way to reject harmful dogma and be adversarial to the unfair or dangerous ideas that some religions/religious organizations can push without crossing those lines, and that some people should consider what they're doing to others who share their label... and, you know, basic human decency.
- It saddens me to mention this, and perhaps you already know and it goes without saying, but be careful of who you express your religious leanings to. There are people in my life that I can discuss my Luciferianism with freely, and there's people who I actively try to conceal it from. While I'd say we don't suffer the same religious persecution as some, there is often a general misunderstanding or hostility towards anything seen as Satanic, and I don't trust everyone who might have an issue with it or negatively affect me in some way because of that to hear me out.
- And finally, familiarize yourself with the bad actors who use the Luciferian label so you can avoid them. While I'd say from experience that Satanism as a religion has a lot of hate groups hiding among their ranks, I've also seen some neo-nazi/fascist sentiments coming from within the Luciferian community. Though I haven't yet seen a full organization that's clearly marketing themselves as Luciferian yet, I think anyone in an alternative religion or in occult spaces should familiarize themselves with the symbols and dogwhistles of crypto-fascists and not just take anyone's word for it when they check every box, and have ties to other neo-nazi organizations, but "are really nice guys who promise they aren't nazis".
That seems like enough to start with, but do feel free to message me again if you have any more specific questions/concerns/comments/etc while you're exploring Luciferianism. I hope it helps, and best of luck!