Grammar is important. Having good grammar skills helps you not only to express your ideas clearly but also to leave a good impression on the reader.
If you are a student, having good grammar skills helps you write better essays.
If you are a college applicant, having good grammar skills helps you write better college admission essays.
If you are a college student, having good grammar skills helps you write better papers.
If you are a job seeker, having good grammar skills helps you write better cover letters.
If you are a writer, having good grammar skills helps you write better books.
If you are a journalist, having good grammar skills helps you write better articles.
If you are a webpage content writer, having good grammar skills helps you write better webpages.
If you are an executive, having good grammar skills helps you write better business proposals.
If you are a lawyer, having good grammar skills helps you write better contracts.
If you are a marketing professional, having good grammar skills helps you write better sales literature.
Whether you are studying or working, having good grammar skills will always work to your advantage.
For beginning learners, Basic Grammar Step by Step is a good book to have. Written in simple English, the book uses a systematic approach to teach basic grammar. Grammar terms are defined and grammar concepts introduced in sequence. When you finish this book, you will have a good grasp of basic grammar.