This resource list the most common mistakes made when writing HTML code. HTML is used to create websites and mobile applications. The resource is extremely useful for identifying mistakes in pupils' code and correcting them. Each error is described with an example and instructions on how to correct it. It has been created by Go Berserk (www.go-berserk.com), as part of a series of resources which teach children as young as 8 how to make their own websites with HTML code.