Q. Powerpoint tutoral
If you are looking for PowerPoint tutorials to assist you in using the Online Library and its resources, they are found in the Online Library itself. After launching the library, the green bar near the top of the page has categories, and the Help & Tutorials can be found under the Services & Policies category to the far right on the green bar.
If you are looking for help utilizing PowerPoint, the Microsoft help pages are quite helpful at http://office.microsoft.com/en-us/powerpoint-help/
I hope this helps!