Here is the official list to learn. The main difference is Option is used instead of ctrl which is a little wierd since there is a CTRL key on modern mac systems:
Help and How-To for Microsoft for Mac Office Products | Mactopia
PowerPoint keyboard shortcuts
Here are the keys ones I useHelp and How-To for Microsoft for [...]
Powerpoint shortcuts
September 25th, 2008 · No Comments · Geek
Tags: Ctrl Key·Keyboard Shortcuts·Mac Office·Mac Systems·Microsoft·Office Keyboard·Paragraph·Powerpoint·Right Arrow·Wierd