This link goes to the Substance Abuse and Mental Health Services Administration's web page for Data. This resource is most likely to come in handy for information about mental health and substance abuse, as you may expect.
This collection of resources is from Healthy People 2030, a public health initiative by the US Office of Disease Prevention and Health Promotion. This page has links to resources for almost every topic covered in HPER 400.
Medline Plus is an online health information resource run by the National Library of Medicine. You should be able to find information on every topic covered in this course by exploring Medline plus.
The World Health Organization has so many resources available and can provide a more global perspective on various health topics. While I may link to specific pages in the topic guides, I highly encourage exploring the WHO site for yourself.