If you're interested in learning more about Kriya Yoga and the 144 techniques, I recommend:
C. Mudras & gestures — 24 techniques
While the 144 techniques are restricted, you can download these ethical PDFs to build your foundation: 144 kriya yoga techniques pdf
The 144 Kriya Yoga techniques, attributed to Babaji Nagaraj, comprise a holistic system divided into five branches, including postures, breathing, and meditation, often taught in three progressive levels. While overview documents are available online, official lineage holders emphasize learning these techniques through formal initiation to ensure correct practice. Detailed descriptions of these practices can be found on Scribd . If you're interested in learning more about Kriya
It is strongly recommended to receive initiation from a qualified teacher before attempting these techniques independently. attributed to Babaji Nagaraj