Individual courses are free, but for a small monthly fee, you can enroll in Udacity's building a portfolio of projects and apps, to earn a Nanodegree certification. Improve your Analytics skills with free online courses from Google. Google Developers Certification lets you demonstrate your proficiency and skill. After you pass a certification exam, you can use your certification to promote. Notes The Shopping Advertising exam is available in the following languages: Google Webmaster Google Webmaster is a free Web application provided by Google for Website developers. You have received a new notification Click here to view them all. Enter your email to reset your password. What to expect Who is it for? Scroll to the "Certifications and exams" section.