The Computer Mouse is a device used to input  data information into a computer processing unit (C.P.U) and seen  via the monitor for review before saving or printing.
This device looks ordinarily small but important. Its features and functions enable the user to select, highlight, copy, drag, move and drop data anywhere within same or different document. 

Also, it allows you to insert pictures, charts and diagrams within documents.  The skill you learn from this tutorial applies to subsequent courses like Word, Excel, PowerPoint and more. A perpetual knowledge.