The Handbook is the best effort that I've seen on the subject, covering a huge breadth of issues including stocking medical supplies (including antibiotics and natural remedies), hygiene issues, infections, treating a variety of injuries (includes a primer on suturing, treating fractures), coping with chronic medical conditions, and a variety of other topics like child birth, treating hypo or hyperthermia and more.
I would not go into this book expecting to become a true expert on any one topic--that will take additional study, training and practice. But, with the knowledge contained in this book and some supplies, you will have an excellent foundation for responding to a wide variety of potential post-collapse medical problems.
What's more is that the Doom and Bloom handbook is written by actual medical professionals! Dr. Bones is an actual M.D. with 25 years experience and Nurse Amy is an Advanced Nurse Practitioner. They're avid preppers and exceptionally friendly, outgoing and eager to help the survival/preparedness community.
The handbook is a little bit pricey--$34.99 for a paperback book--but it is also in limited production, probably actually print-on-demand. Costs are a lot higher on this level of production versus say a big 100,000 book print run. It's a hefty 440 pages of info and well worth the asking price, in my opinion. A welcome addition to your survival bookshelf!
Get The Doom and Bloom Survival Medical Handbook