I am a bit confused about the focal Bhava technique.
If I want to see all connections from and to Lagna, Lagna Lord and AK then I need to count the following:
Lagna: Planets in Lagna (Bhavas they rule) and aspects of planets to Lagna (Bhavas they rule).
Lagna Lord: Conjunctions of planets (Bhavas they rule), planets that aspects Lagna Lord (Bhavas they rule) and Bhavas the Lagna Lord aspects, planets the Lagna Lord aspects (Bhavas they rule).
AK: Bhavas AK is conjunct, conjunctions of planets with AK (Bhavas they rule), planets that aspect AK (Bhavas they rule), Bhavas AK aspects, planets that AK aspects (Bhavas they rule).
I believe this is correct for the most part.
This is a little tricky. I recall Ernst doing things a little different (unintentionally) with his weak shadbala Me in these videos and they weren't exactly straight forward. I had to re-watch them...I suggest re-watching them.
I usually find that the bhavas that the lagna lord is in as well as the bhava of the AK tend to be the main focal bhavas anyway.
Yeah, I think he makes some mistakes on those three videos on this technique. Just forgets some aspects which is easy to do...It is a useful technique though and worthwhile to learn. Takes a bit of time.
Sometimes it can really show a theme to certain bhava that you wouldn't otherwise think would be so activated yet shows in one's life. However, I do find that typically, the lagna lord placement and the bhava of the AK usually show key themes.
I also noticed some inconsistency in the videos for which planets are counted as focal bhavas. Maybe it's in the Jaimini spirit of making us figure it out ourselves!