How to insert a title slide into a PowerPoint presentation

In PowerPoint 2013, it is really very simple:

1. In Presenter View, click on Show Taskbar (upper left corner)

2. When taskbar opens at bottom of screen, click on PowerPoint tab,

3. In three views that are shown (Editor, Presenter and SlideShow), click on the Editor view.

4. If you want audience to see your changes as you make them, have same slide showing in all 3 views.

5. If you don't want audience to see changes until you are done, click the Black screen icon in Presenter View (Monitor with diagonal line across), before you start your change, OR change to a different slide in Presenter view.

6. Slideshow will show your changed slide on the big screen, when you go to it.

Happy PowerPointing!

New slides seem to assume the language that the entire presentation's set to, regardless of the language of the placeholders on the masters/layouts.

Then in some versions, PPT may change the language based on your keyboard (ie, windows settings). That's controlled by Options | Advanced | Automatically switch keyboard ...etc. Try removing the checkmark there.