Student or Learner
What criteria should we use to determine whether a grammar book is reliable or not?
What do you mean Mike? I didn't follow you. If you mean the content would suffice to describe the feature of that book, then how can we recognize the authenticity of the content? This is my question. Suppose I'm non-native speakers and I don't have much experience same as you.
Think of half a dozen problems in English, and see how each book deals with them. If the answers to your questions are easy to find and helpful, then the book is probably useful for you.
One book that many students, and teachers, have found very helpful is 'Practical English Usage' by Michael Swan
The "English Grammar in Use" set by Raymond Murphy is also well-liked.
Remember - if you don't use correct capitalisation, punctuation and spacing, anything you write will be incorrect.
Why did you, Tdol, use helps although it preceded by plural-words/points, please? Thank you.
The subject of the verb helps is Using the same words/points