The program comes with a complete tutorial. You can access this by clicking on the help portion of the tool bar. The web also has an overwhelming amount of well-written tutorials. Microsoft has made available a free PowerPoint viewer that allows you to show presentations on any computer made in the last five years. PowerPoint makes it easy to convert any presentation into a web page.
Most schools purchase lesser-known presentation software for their staff and students due to cost.
If you look into it Microsoft actually gives academic institutions that buy multiple copies of PowerPoint a reduced price. When buying 25 or more copies, PowerPoint could actually cost your organization the same if not less than other presentation packages.