Here i can teach you all about engineering drawings concept with very simple and easy way. And also focus on which kind of questions are asking in nowdays exams. Also i'll provide you pdf files of these drawings concept, we have to focus on what is the right way to handle all compitative exam, how can we solve questions in few sec in our minds, for all these we need to do practice and practice more. I will clear all your doughts and misunderstandings about basics of your concepts. You all know that the engineering drawings is a practical subject . But in exams they only ask optionals ans. So thats way we have to learn practical plus theoretical knowledge also, and keep these concepts in our mind and use in our daily life , i recommend that tought from me ill give you my 500%   and you no need to go anywhere to search for other books and teacher.