<human>:  I want to take an online course for a certification but I am not sure what the best one is for me. Can you suggest a few that would match my skills?
<bot>: 
1. Codecademy offers an array of online courses for various certifications, ranging from computer programming to career development.
2. EdX offers a wide range of free or low-cost certifications in business, engineering, IT, finance, and more.