Start at the bottom left
Baseline is the physiology everything else cites. If you are new, work along that row before you climb. Hemodynamics is the one to start with, and it is the one that is live.
Sixteen series across three layers, plus the case files that interleave everywhere. Green means lessons are published and the series is moving.
LAYER 0
The physiology every acute nurse is expected to already have.
LAYER 1
Core ICU practice. The orientation gap, and the reason this exists.
LAYER 2
Specialty depth and certification, once the foundations are on the shelf.
Baseline is the physiology everything else cites. If you are new, work along that row before you climb. Hemodynamics is the one to start with, and it is the one that is live.
Every lesson opens by saying where it sits on the map and what it assumes. Search will drop you into the middle of a series and that is fine. Nothing is gated.
Series are broken up by integrated cases that apply everything so far. Spaced repetition, built into the structure rather than bolted on.
When a series finishes, its study guide and flashcards get packaged. The map is also the product map, which is why it is worth reading.