English grammar book?

Would be great if i can it download or find somethere.

For me the grammar book that stands out as a reference work are the books of Swan or Parrot

image Practical English Usage (Practical English Usage, Third Edition); by Michael Swan. I have this book.

The alternative:
Grammar for English Language Teachers
by Martin Parrott

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Both are top-quality and reference works.

If you are looking for a study books, starting from step one, then you should look for a course book, such as Murphy:
English Grammar in Use: A Self-study Reference and Practice Book for Intermediate Students of English - with Answers
by Raymond Murphy

Used the book myself. Very good for self-study.