If you start learning Photoshop the most effective method to be familiar with this graphic editor is to follow excellent Photoshop tutorials.
With Thanks to Nancy Young for this suggestion.
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By Jon Allen and Jan Nelson
«Rubik’s cube provides an easily accessible, hands on introduction to group theory. Learn about how you can use simple group theory to efficiently solve any Rubik’s cube!»
This Learnist site offers solutions and game theory papers for enthusiasts of varying skill levels and ranges of intellectual interest. -JL
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