Textbook

Based information from on Wikipedia, we know that:
A textbook or course book is a manual of instruction in any branch of study. Textbooks are produced according to the demands of educational institutions. Although most textbooks are only published in printed format, many are now available as online electronic books .”  
In learning process, a teacher can use some source namely textbook, article, handing out, book of electronic and the other source learn, but most used in learning process that is textbook.
The most obvious and most common form of material support for language instruction come trough textbook. Most likely as a relatively new teacher, your first concern will not be to choose a textbook, but another to find creative use for the textbook that has been handed to you by your supervisor. So, even though you may have idealistic thoughts about other (and better) textbook, your challenge is to make the very best use of the textbook that you have.

“Sometime new teachers, in their zeal for creating wonderful, marvelous written materials for their students, neglect the textbook prescribed by the school curriculum and fail to see that this resource may actually be quite useful. And you will no doubt find that as a new teacher, you already have enough on your hands just preparing a lesson, carrying, it out, monitoring its unfolding, and managing the dynamics of a classroom full of students. You don’t need to add more stress to your life by trying to create brand-new material.”

Some kind of the text book as below:
a. Textbook Adaptation
So here you are, text book in had, preparing for tomorrows lesson. If your  textbook has a teacher’s edition, by all means consult it and use as many of its suggestion as you feel are appropriate. If there is not teacher’s edition, then your task becomes one of devising ways to present the content and the exercises of the task becomes one of devising ways to present the content and the exercises of the book to your class.
b. Textbook Evaluation
Some questions are issues of textbook adaptation that you face almost every time you sit down to plan a lesson. You are to sit that the way you present the textbook lesson is appropriately geared for you particular students-their level ability, and goals-and is just right for the number of minutes in your class.
If  your teaching situation allows you to choose a textbook, you have an exciting but complex task ahead of you. In fact, the number of question that need to be asked about a textbook can be overwhelming. But  once you have carried out a throughout investigation of textbook using some kinds of consistent evaluation procedure, you  will be rewarded by having chosen a textbook that best fits all of your criteria.
An abridged evaluation form that can be a practical set of criteria for either:
1) Choosing a textbook for a course
2) Evaluating the textbook you are currently using.
Even though that list was originally created several decades ago, it still stand as an excellent set of evaluative factors. As you read through this  evaluation form, think of an textbook that you are reasonably familiar with and ask yourself how well that book meets the criteria.
c. English Grammar Textbook
The English grammar textbook consist of there word, at the time the words will be explain. The first, English is “the English Language”.  The second, “grammar is rule for forming words and making sentence.”  And the third, “textbook is book that teaches a particular subject, used in schools, university, etc.”
Based on the explain above, the research concluding that English Grammar Textbook is the book that describe the rule for forming words and making sentence  in English language grammar is used by teaches as a English subject in schools, university, etc.