Here is a list of WFPB introductions ordered from easy-to-understand to advanced. Any one of these videos will give you a good overview:

• An Introduction to a Whole-Food Plant-Based Diet (55-minute video)
  Dr. Anthony Lim presents on a whole, plant-based diet at the TrueNorth Health Center. The presentation is followed by an informative 20-minute Q&A.
• Dr. John McDougall, "The Starch Solution" (60-minute video)
  The food for humans is starch.
• Unleashing the Power of Plant-Based Diets by Brenda Davis, R.D. (80-minute video)
  
• "Forks Over Knives" (96-minute documentary)
  Forks Over Knives trailer   Filmmakers Discuss Forks Over Knives
• Prevent and Reverse Heart Disease with Caldwell B. Esselstyn, Jr., M.D. 2018 (53-minute video)
  Dr. Esselstyn is the Director of the Cardiovascular Prevention and Reversal Program at The Cleveland Clinic Wellness Institute. Keynote address focused on nutrition to prevent and reverse heart disease.
• What I Wished I Learned About Nutrition In Medical School by Dr. Klaper, 2020 (80-minute video)
  02:00 The science behind the destructive effects of the Standard American Diet (SAD).
  40:50 Solutions to correcting common health conditions and how to bring true health and healing to the patient.
• How Not to Die - Michael Greger, M.D. (83-minute video)
  Uprooting the Leading Causes of Death, March 12, 2016. Dr. Greger shows screenshots of the peer-review literature as he reads from them.
• Dr. Dean Ornish Symington 2017 (50-minute video)
  

Here is a list of WFPB introductions ordered from easy-to-understand to advanced. Any one of these articles will give you a good overview:

• https://nutritionstudies.org/whole-food-plant-based-diet-guide/
  How to Living a Whole Food, Plant-Based Life.
• 8+ Striking Nutrition Studies Every Medical Student Should Read
  8 studies that demonstrate the value of WFPB nutrition in clinical practice.
• A Medical Case for a Whole Food, Plant-Based Diet
  A WFPB introduction written by a doctor, for doctors (11-minute read).
• Research Confirms a Plant-Based Diet Can Help You Live Longer by Conor Kerley, PhD.

The following books are written for people with no background in science or nutrition:

• The China Study: Revised and Expanded Edition: The Most Comprehensive Study of Nutrition Ever Conducted and the Startling Implications for Diet, Weight Loss, and Long-Term Health
  Written by Thomas Campbell and T. Colin Campbell Ph.D. 2016. The book is a framework for understanding the science of nutrition and health. It examines the relationship between chronic illness and the consumption of animal products. Evidence from around the world points to WFPB being the healthiest diet for humans (only one chapter is devoted to the China–Cornell–Oxford project). If you read only one book about nutrition science, read this book!
   
• How not to die: Discover the Foods Scientifically Proven to Prevent and Reverse Disease
  Written by Dr. Greger 2015. This book packs an overwhelming quantity of scientific evidence.
   
• The Pleasure Trap: Mastering the Hidden Force that Undermines Health & Happiness
  Written by Dr. Lisle Ph.D. and Goldhamer 2003. The book shows you how the processes of happiness, pleasure, and mental biases guide behavior. With this knowledge, you can make the best decisions to maximize your own health and happiness.

The following books give practical advice on how to adopt a WFPB diet. There is a lot of overlap between these books:

• The Starch Solution: Eat the Foods You Love, Regain Your Health, and Lose the Weight for Good!
  Written by Dr. John McDougall 2013. This is an easy-to-read book. McDougall emphasizes the central role of starch in a successful WFPB diet. Many examples, case studies, and testimonials.
   
• The China Study Solution: The Simple Way to Lose Weight and Reverse Illness, Using a Whole-Food, Plant-Based Diet
  Written by Dr. Thomas Campbell 2016. Campbell summarizes the research and provides a scientific perspective. If he's not sure, he tells you why. When he is sure he explains why. Provides a framework for understanding nutrition using three food groups: 1) Animal products, 2) Processed plant fragments, 3) Whole plants.
  

Some sites to search WFPB topics are:

• https://nutritionfacts.org/topics/
  https://nutritionfacts.org/videos/
  Search your chronic condition to find how the WFPB diet could affect you.
  Dr. Greger shows screenshots of the peer-review literature as he reads from them. Below each video are buttons labeled "VIEW TRANSCRIPTS", "SOURCES CITED", "PREVIOUS VIDEO" and "NEXT VIDEO".
  Dr. Greger has cataloged an enormous body of evidence supporting WFPB. This is a valuable resource for finding useful nutrition information. He leaves it to the reader to decide the relevance and quality of the studies.
• https://nutritionstudies.org/
• https://plantbasedresearch.org/research-articles-category
• https://www.drmcdougall.com/google-search/
• https://www.ncbi.nlm.nih.gov/pubmed/advanced
  PubMed is a search engine accessing the MEDLINE database of life sciences and biomedical topics. The United States National Library of Medicine (NLM) maintains the database.
• FoodData Central by U.S. Department of Agriculture (USDA)
  Provides nutrient profile data.