Paula Rodríguez Abruñeiras & Jesús Romero Barranco 
Long Story Short: [PDF ebook] 
An Interactive Journey through the History of English

This textbook intends to do a clear, informal review of the history of the English language. Although the main focus is not to provide a thorough social description of the different periods in which the history of English is divided, we want to make it clear that language has changed because it is used by society, and therefore one cannot be understood without the other.