Criteria for selecting a textbook as a source of knowledge
Knowledge can be obtained from any book. Scholars write only and only for the sake of knowledge so that whatever knowledge is there in them. He met for another. Knowledge is also meant for exchange. It is not that the knowledge is with oneself and if it is not given to others, then that knowledge is of no use. Until the knowledge is not exposed, neither we nor others will benefit. Suppose we have the knowledge to do or make something. And we have saved it from others. So that others do not know what we can do. Then that knowledge will not be of any use to you. You have knowledge and are not using it at all. Then what would that be of use? He will not mature even after having good knowledge. If you keep any knowledge hidden with you, then it will neither be useful in the manufacture of any object, nor will anyone know about its use. Therefore, if you have any knowledge, then you should definitely use it.
Spiritual book, religious book, inspirational book for education and knowledge, in which thoughts and knowledge of great scholars are written which increases education and knowledge.
Law book for policy rules, Constitutional Book, Historical Book, in which the great king and his thinker get a chance to understand the thoughts and knowledge, which reveals about its scope and policy rules.
The books of chemistry, physics, biology and zoology are very useful for those working in the field of science or to gain knowledge.
Knowledge of language is very important for the writer, at least the regional language, the language of the state, the language of the country, and good knowledge of international is necessary, only then the writer can choose all the words. Policy rules, knowledge, good thoughts, way of talking and politeness are very important. For this, the study of proper books is very important. There must be respect and admiration for writing in any language.
For writing and knowledge of account, good knowledge of economics, commerce, library, secretary studies and mathematics is very important. Due to which the work of writing and every type of knowledge related to it is obtained from the books of these subjects and the knowledge increases.