Project Rush is Adobe's first cross-platform mobile video editor. It's essentially a dumbed down version of AE, PR, and AU. It comes out later this summer.
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Illustrator Shape Builder Tool in ONE MINUTE
It's pretty amazing what you can create by adding and subtracting shapes. Just take Twitter for example - the entire logo is made up of circles. The shape building tool in Illustrator makes combining shapes effortless. Hopefully this video helps you understand it!