he wrote a book that is popular and have been reviewed by nutrition expert. https://www.amazon.com/Fat-Fuel-Revolutionary-Combat-Increase/dp/1401953778/ref=sr_1_1?ie=UTF8&qid=1536110107&sr=8-1&keywords=fat+for+fuel+book+by+dr.+joseph+mercola&dpID=41l%252BGRxpdpL&preST=_SY291_BO1,204,203,200_QL40_&dpSrc=srch
Fat for Fuel: A Revolutionary Diet to Combat Cancer, Boost Brain Power, and Increase Your Energy. Also, dietdoctor.com and r/keto. I lost 90 pounds in 3 months.
I like Dr. Mercola, been reading him for over 5 years. His lastest book Fat for Fuel: A Revolutionary Diet to Combat Cancer, Boost Brain Power, and Increase Your Energy is fantastic. Matter of fact, reading it convinced me to go keto.