Having said that there is nothing that you can not find at Wikipedia!It is a great web resource for information – you can get information about almost everything! If you want to keep a backup of the information from Wikipedia you could do it by copying the text and saving them as text files. But, it is not very productive way. Rather, you can backup the Wikipedia document by creating a eBook from the Wikipedia article and download it to your local computer.
Wikipedia has its own inbuilt mechanism to convert any article into eBook for the registered users to do so. Here is how to do it.
Read more