These queries accumulated in same corner of my mind, which inspired me to create this work. Whenever learners face problems, solution has been made simple with the help of figures and comprehensible language.
The foremost aim of the book is to make it easy, simple and interesting for learners. The general commands which occur frequently in any plan have been emphasized in the book so that trainers and learners find it easy to master.
I hope that my humble work, will act as a boat to cross the sea of technical knowledge and both learners and trainers will hove it as their own boat.