You have not actually told us what help you want, so I am guessing you want to know how to:
read from a text file: https://msdn.microsoft.com/en-us/library/a499td6y.aspx[^].
use the clipboard: https://msdn.microsoft.com/en-us/library/80db3kax.aspx[^].
paste data to Word. This requires knowledge of COM and the Word interfae. A far more advanced topic.