A pattern in Photoshop is essentially a tiled image. The use of patterns can speed up your workflow by eliminating your need to create intricate objects and using a repeatable image template. Pattern Stamp tool, Brush Settings, Layer Style and your Library.
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https://www.youtube.com/watch?v=PbhhOyFTSF8
Photoshop CS6 - 3D - A quick tutorial on how to create gears in only few steps from any image on the web!
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https://www.youtube.com/watch?v=pAcsoRT9gQo
Photoshop CS6 - More on the Secondary view, swapping views and using ALT/OPTION to zoom in the Secondary View.
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https://www.youtube.com/watch?v=yryXvCoQHsw
Vanishing Point update for CS6
sample : http://www.deviantart.com/download/291208097/vanishing_point_demo_by_dramenon-d4tdllt.psd
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https://www.youtube.com/watch?v=-dVg3bWPFIQ
Photoshop CS6 - 3D - The Ivy Generator creates a biological simulation of growing ivy and the files can be used in Photoshop to create unique images.
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https://www.youtube.com/watch?v=vQBHMNM0qlE
Photoshop CS6 - Create a Glass Cup, cut a hole using a constraint and then add a taper in Photoshop CS6, apply some simple materials and get your design on!
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https://www.youtube.com/watch?v=vIM-aDk095E
Photoshop CS6 - Quick overview on Roughness! It can be thought of as how much the surface will blur its reflections and highlights.
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https://www.youtube.com/watch?v=AswJM-gOekI