Does anyone know of a completely free website I can use to take a graphic design course that doesn't count for anything, just to take to learn something new?

https://join.shawacademy.com/online-graphic-design-course?utm_source=google&utm_medium=cpc&utm_campaign=row_search_generic_graphic%20design_courses_bmm

The promotion ends one hour from now. Hope u can make it!