Note that the libgen links might require a VPN to access them. Remember that if a book proves useful, it is in good taste to purchase a physical copy of it out of respect for the author, if you have the money and can safely keep a physical copy.
On the history and origins of tulpamancy: they are not buddhist but theosophic. Or rather, a theosophic reinterpretation of two separate tibetan buddhist concepts, the sprul'pa on the one hand, and the first stages of deity yoga on the other hand. Download the paper here:
https://www.researchgate.net/publication...he_Tulpaem
Adjacent studies on tulpamancy can be found on Google Scholar if you are interested -mind you that almost all of them spread the misinformation that tulpas are buddhist. I mean, even Angela's Symposium video on servitors in magic spreads the misinformation...
Adjacent techniques that can be used for tulpamancy: anything related to creating magical servitors or familiars.
The witch's familiar is an example. You will find adjacent informations, especially cross-cultural, in
Familiars in witchcraft. Could be food for thought on how to feed a tulpa.
The early stages of deity yoga (
the wikipedia article is descriptive enough IMO but you can find step by step guides on YouTube about specific tantric yidams, just swap the yidam for your tulpa and you're good to go). If you want more details in written form, there is
this book on deity yoga and also
this one. Note that if you use the techniques for tulpamancy, it stops being buddhist and yoga techniques.
Techniques to communicate with one's dissociated parts have proven useful to communicate with tulpas. The two go-to books on the subject being
Coping with trauma related dissociation and
Healing the fragmented selves of trauma survivors. Just skip to the parts about communication and other types of interactions.
Pagan deity worship techniques can prove useful as tools to feed a tulpa.
This playlist about deity work in norse paganism contains lots of tips and infos that can be repurposed for tulpamancy.
Places to chat about tulpamancy: not a user myself but a tulpamancer friend advised me this subreddit
https://www.reddit.com/r/Tulpas/
If you understand french I have a couple french ressources too.
My own additional two cents:
If you have trouble with self hypnosis and transe states of consciousness to the point of needing a bit of a chemical nudge for that, it could be a nice idea to work on building the feeling of inner safety (see the two books on trauma and dissociation I linked in this post). According to conferences I watched on the subject of transe, hypnosis and mental health, people who are "on the edge" for whatever reason (anxiety, traumas, lack of self confidence, autistic sensory hypersensitivity, ADHD, insomnia, you name it) cannot relax enough to enter alternate states of consciousness. Working on untangling said knot can help improve one's spiritual life.
Building the inner safety and ability to enforce one's own boundaries also helps with mental and spiritual safety. It keeps the bad spirits at bay, if you prefer, because you look too tough to be worth messing with.
The purpose of tulpamancy is to make the tulpa autonomous. A lot of people start panicking when their tulpa becomes autonomous, having their own thoughts, choosing their own actions... A lot of spiritual groups say that such tulpas are dangerous because they are not controlled by their creator anymore. You will find such discourse in theosophy's thought-forms stuff, in witchcraft's familiars stuff, and so on. IMO a thought-form becomes dangerous only when fed "rotten food" such as one's subconscious fears and so on. A tulpa feeds on the conscious food you give it (cf. the deity worship videos as examples of how to feed a tulpa) but also on your subconscious. If you have unhealed wounds, anxieties, phobias... it is possible that the tulpa absorbs them and that it shows. Proceed the way you would with shadow work or how to manage a persecutor alter in dissociative disorders (cf. the books on trauma and dissociation, I also have a couple specific papers on the subject if you are interested). Apparently, the "persecutor alter work" is also very similar to how some spiritualities deal with bad spirits during exorcism and it is said to be more efficient than the abrahamic banishment, for the reason that it helps erasing the cause of why the bad spirits is here rather than just giving it the boot. Without the cause, there is no reason to come back. I'll let you browse YouTube on the subject of buddhist and shinto exorcisms to see if it is a good idea for you or not. That being said, if an autonomous tulpa would make you freak out, maybe you need to do some work on inner safety, inner healing, self-confidence etc. before you start building the tulpa. Or not. You do you, I'm not your mom, just giving my opinion stemming from my experience and the one shared by tulpamancer friends.
Not everybody has the same predispositions for tulpamancy. Some people will need 10+ years of daily training before having a results, others have a mind that can just flip a switch and voilà, and all the greys and rainbows in-between.
Lots of "familiars in witchcraft" manuals for creating a tulpa-like construct will advise to create a physical anchor for the construct. It can help if you have trouble visualizing things. But on the long run, for tulpamancy, I would rather advise to have a spiritual /mental anchor rather than a physical one. You can of course start with a physical one and slowly switch to a mental /spiritual one once you and your tulpa feel confident enough. Some tulpas can express distress if their anchor is physical, though, so be warned. But they can still enjoy "physical tulpa food" nonetheless even the ones without a physical anchor. Go with their flow.
And last but not least, all the informations and techniques on tulpamancy are like running shoes. Having the best running shoes in the world will never make you a good runner if you never train. And just like for running, how to train will depend on your predispositions. Try a few different exercises and schedules, see what helps and what does not.