Options on edX range from free courses to paid certifications. They have over 90 global partners and were founded by Harvard University and MIT.

Coursera has over a thousand free courses. Free courses are Coursera courses offered without charge to anyone who enrolls. They cover a range of topics. Degree programs and certificates are also offered, but require a fee.

IBM has several different learning paths in Cognitive Class geared toward learning data science. One neat perk is the ability to earn a badge after completing a path, which can be displayed on your LinkedIn profile.

Class Central lists all of the top 50 free online courses of all time with links to each.

Canvas Network allows you to enroll in a variety of open online courses. The courses allow for continual access to course content after the course end date.

Alison has unlimited free courses. You can purchase optional certificates once you have completed a course for a fee.

Canva is an online graphic design website, that offers an easy drag-and-drop feature with hundreds of fonts and millions of images. Create professional newsletters, presentations, or marketing materials with this easy to use service.

The Kent District Library, in Kent County, Michigan, created the What's Next®: Books in Series Database of Kent District Library to help search series fiction. They define a series as two or more books linked by character(s), settings, or other common traits. The database is searchable by author last name, author first name, name of a series, book title, category or genre.