There is a lot of info there; maybe too much. ..... If it could be condensed for the "average Joe's" usage it would be great. I am sure the "necessary stuff" would easily fit on a single large laminated card or small flip chart.....
I agree. While the linked RAF guide has some interesting stuff, it very heavily oriented to specific models of helicopter and equipment, and UK procedures. The essentials are mostly there, but it would be hard for many people to sift out the generally applicable stuff from the specific local (as in UK) procedures.
The best general short version I've seen is in the little book
Field Guide of Wilderness & Rescue Medicine , By Morrissey and Johnson, published by Wilderness Medical Associates, 2009. See pages 92-93 for a nice list of key points and an illustration showing what is needed for landing zones, and how to safely approach a helicopter. I have copied out those two pages on waterproof paper and keep them in my day pack.
The Morrissey & Johnson book is oriented towards WMA's WFR training. It is pocket sized and printed on waterproof material. I keep a copy of the book in my larger first aid kit.