No question comes up more often in these discourses than this one: a person is in some kind of trouble — tantrik affliction, enemies, debt, illness, family conflict — decides to take up sadhana, and has no idea where to begin. The discourses treat this as the single most consequential decision a sadhaka makes, because the wrong first step (an ugra mantra picked out of anger, a mool mantra needing Diksha attempted without one, a vamachari havan with zero guidance) is what actually produces the visible harm people later blame on "tantra gone wrong" — not tantra itself.
The structure given is consistent across dozens of these talks: sadhana comes in three tiers — aarambhik (the entry-level sadhanas everyone does first, regardless of what they'll eventually specialise in), mukhya (the one ishta devata you commit to as your ongoing practice), and anga (situational sadhanas taken up only when a specific problem calls for them). A new sadhaka's only job is the first tier — nothing else.