My most used and favorite is:
Herbal Medicine: 190 herbs to know and use.
Dr. Sharol Tilgner
https://youarethehealer.org/
she has other books equally good...this one has been handiest on my tablet and refered to often. She participates here at permies occasionally.
I love Michael Moore's web site ....lots of free good info there.
https://www.swsbm.com/HOMEPAGE/HomePage.html
and we have Stephen Harrod Buhner's two books, just in case:
Herbal Antibiotics: Natural Alternatives for Drug-Resistant Bacteria. Storey Publishing. 1999. ISBN 978-1-58017-148-9.
Herbal Antivirals: Natural Remedies for Emerging & Resistant Viral Infections. Storey Publishing. 2013. ISBN 978-1-61212-160-4.
He uses much of Michael Moores information, dosages and methods of preparation.
https://www.stephenharrodbuhner.com/
"We're all just walking each other home." -Ram Dass
"Be a lamp, or a lifeboat, or a ladder."-Rumi
"It's all one song!" -Neil Young