Get Body Smart is an excellent resource for learning a whole lot. Here is the summary from the site’s designer, Scott Sheffield:
GetBodySmart represents my attempt to create a fully animated and interactive eBook about human anatomy and physiology. The contents and design of this long-term project are based on my 21 years of teaching this material at the university level.
While it is being constructed, I invite all interested teachers, students, healthcare professions, and others to use the free tutorials and quizzes in GetBodySmart to help explain the body’s complex physiological interactions and illustrate its important anatomical landmarks.
The site is in the very early stages of development, and a lot of content is still missing. Please be patient. Even though my pace is somewhat slow, I try to make additions/updates every day. Because this is a large and complicated project, it will realistically take me many years to develop GetBodySmart into a truly comprehensive learning resource.