Where is the pinch brush in 3.5 I heard so much about?
While looking at the canvas, press “B” on the keyboard and the brush panel will pop up. Now press “P” on the keyboard and you will be left with all the brushes starting with the letter p.
Locate the pinch brush (it’s in there) select it and pinch away 
For any other brush you might be missing, just open up Lightbox and click on brushes.
Hope that helps.