I didn't buy Keys. I read comments here first and figured if I needed it, I could always just get the ebook. I barely even used the main text. Online resources are easier to work with because you can get right to what you want to know. No reading through extraneous text. Plus, my faculty mentor provided sample papers.
Associate in Arts - Thomas Edison State University
Bachelor of Arts in Humanities - Thomas Edison State University
pursuing Master's degree, Applied Linguistics - Universidad Antonio de Nebrija
*credit sources: Patten University, Straighterline, Learning Counts, The Institutes, Torah College Credits, Kaplan Open College, UMUC, Thomas Edison State University (guided study liberal arts capstone)