Elements of AI is an online module that you can do at any time and in any pace at https://www.elementsofai.com/. The module is a self study module of the online material and is examined through self correcting and peer reviewed exercises. When you have completed Elements of AI you can register to this module to get your results validated. To verify that you have really taken the online course, you have to upload your certificate from Elements of AI and do a validation test with questions similar to the ones in the online module. For more information see the following website: ETE318 Elements of AI - Course Information.