Hii charan,
Textbooks are one of the main important source for us to learn new things.They give us knowledge which is theoritical.We will excel in that subject only if we can convert that theoritical knowledge into practical knowledge.We should apply and thereby we will be able to understand clearly.
Similarly We cannot learn the computer just by studying in a Text Book.you should practice regularly on a personal computer.So practice either in your school or near by netcafe whatever you have studied in the textbook.If it feels difficult for you There are so many institutes in and around us to teach computer knowledge.
Always try to learn new things and do better
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