Books on Tibetan meditation process (Tantra tradition or school of practice).
includes processes for the use of “action” techniques.

All Tibetan traditions and schools are unique in that they always start to teach a “bibliography”.
The bibliography is a way of giving honour or credit or recognition or gratitude to the teachers within their lineage of traditions and practices.
They mention their Guru (Lama), their Guru’s Guru (Lama of their Lama), their Guru’s Guru’s Guru (Lama of their Lama’s Lama) and so on exhaustively…along with any new practices that evolved during each Lama.
All Tibetan lineages of traditional practices, trace their origin all the way back to Kashmir and acknowledge Shiva’s techniques (Yoga and meditation) as the origin.

Many people are unable to read past the first chapter simply because the “bibliography” is full of obscure names.
To the Tibetan, these names (characters and events and achievements) are familiar within their tradition and social fabric.

The Tantra practices are more aligned to Yoga, but with far fewer phases when compared to the Mahamudra tradition.
This mainly involves discarding any “belief” system, including social norms and morés.

Of course, not everyone is able to achieve it. A lot of it can and will surely be construed as anti-social.
Often self-deception can occur since very few people are able to evaluate themselves objectively.
Even though it’s important to have a Guru or Guide in this technique, many practitioners do not even follow their Guru.
Often, Tantra techniques are considered as the “dark side” of yoga.