This authoritative survey offers a concise description of Middle English, the language of Chaucer, during the period from 1100 to 1500. Middle English is discussed in relation to both earlier and later stages in the history of English and in regard to other languages with which it came into contact. The book covers the principal features of Middle English spelling, pronunciation, grammar, and vocabulary and also introduces Middle English textual studies.
I mean, I managed to pick up a few interesting factoids about the development of Middle English here and there, but this is definitely a book for the academic study of Middle English linguistics. Scholarly and in my view not meant for the layman.