David J. Young 
Introducing English Grammar [PDF ebook] 

Introducing English Grammar provides a basic grounding in English grammar, without going into too much detail or theory, and will lay the foundation for further grammatical studies. David Young presents English grammar in a coherent and lively way. He dispels the popular notion among students that grammar is simply a set of dreary rules and argues for the importance of grammar in describing the structure and function of language itself. Exercises are provided at the end of each chapter and the book includes integrated diagrams and a glossary of technical terms at the back of the book.