1. Gridlines & Guides
Go to View > Turn on/off Gridlines and Guides
2. Zoom In & Out
Hold CTRL + Scroll Up/Down
3. Duplicate
CTRL + D or Hold CTRL + Select and drag
4. Moving Objects
Hold your SHIFT key if you’re trying to move objects in PowerPoint
More info your can read here: External Link
5. Add Pictures
Select shape > Format Shape/Object > Picture or Texture Fill > File... > Find your picture
6. Replace Default Icon
The same way you add a picture.
Select shape > Format Shape/Object > Picture or Texture Fill > File... > Find your icons
7. Resize/Crop Picture
Select shape/image > Format Tab > Crop
