Grammar Made Easy is part of Terry O'Brien's acclaimed "Little Red Book" series, aiming to simplify complex grammatical concepts for learners. The book emphasizes the importance of understanding the structure and rules of language, much like knowing the rules of a game to play it effectively. It advocates for the practical application of grammar rules, focusing on structural grammar, syntax, and accidence, to enhance the reader's command over English.

This book serves as a concise guide to English grammar, making it accessible to learners at various levels. It covers essential grammatical components, providing clear explanations and examples to facilitate understanding. The book's approach is to demystify grammar, encouraging readers to apply rules rather than just memorize them, thereby improving both written and spoken English skills.​