Library: This course is Lesson 10 only, with full access to the Library. The Library has over 38 hours of video content, over 163,000 written words, and many useful resources. Lesson 10. [Certificate Issued upon completion. 6.5 CE Hours.] CE Category of this course: Science. Instructions-on-How-to-Take-this-Course.pdf1,109 words. history and how to take this course.pdf737 words. Have a question? Check out our Forum!