Coursera is offering a free course on fundamental English writing beginning January 30 till March 9, 2015.
The course description for Crafting an Effective Writer: Tools of the Trade reads:
Learn to become an effective builder of sentences using the basic tools of grammar, punctuation, and writing. By dedicating yourself to the craft of writing English, you will learn to use the eight parts of speech and grammar to develop the four basic sentence types into a well-organized, detailed paragraph. This course is designed for anyone who wants to become a better writer. If you need to write more clearly for work, prepare for a placement test for a college, or improve your skills for current writing projects, this class is beneficial. Please be aware that basic writers are the targeted audience for this course.
Here’s where you can register and find more information: Crafting an Effective Writer: Tools of the Trade