Free wedding cake decorating classes are offered on Craftsy and Pink Cake Box University as of 2016. A list of free video classes is shown on Study.com, as well. Tutorials give information on cake decorating in general and can be used specifically for wedding cakes.
The classes offered by Craftsy include HD videos for watching at any time, downloadable recipes and charts, and interaction with other students on its forum. Pink Cake Box University has videos and detailed step-by-step instruction sheets with photographs illustrating a number of cake decorating techniques, including how to make fondant and pleated cummerbunds. Study.com lists organizations that offer free cake decorating tutorials and classes; most of them are companies that sell baking-related goods.