7. Slide Show tab is mainly for do pre-show preparation. Run through slides, set up a custom show, record narration.
7. Review tab is mainly for Check Spelling & Grammar add and review Comments, use research service or thesaurus.
8. View tab is mainly for Switch to all views including Notes Page and Master View, show grid, arrange windows.
Ribbon - its 9 tabs, groups and commands:
1. File tab: Start a new file, save a file or use Save As, open a file; see your most recently used files; protect files by applying a password; delete personal information from a file; prepare to share; and use the Options window to change PowerPoint settings.
