Itzamna Castrejon5 websites where you can learn in-demand skills for freeverified_publisherBusiness Insider - Amy Elisa Jackson,In order to stay competitive in this job market, you’ve got to keep your skills “up to snuff” and constantly think about ways to expand your know-how. It’s not enough to hang a fancy diploma on the wall and rest on your laurels. Employees must up-level their skills and seek new challenges at work …