We've done some research for you on free classes from a trusted online learning platform, Coursera. For those of you that have balked at spending money on these various courses, we understand. It can be hard to allocate budget to your personal growth when you consider all the other business expenses. As much as spending money on yourself can be difficult, expanding your skills and knowledge base can help your business succeed. Below are 5 essential business skills you can master by taking a free class from Coursera.