That is pretty basic, and there are no such tutorials. You go mess around with gradient/shape/ tools, also try blending.
Blending explained :
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Gradient tool explained/usage tutorial :
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Pen tool/vector shapes with photoshop:
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Some typography:
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And there you go, that's basically all you need to know, and of course photoshop basics and basics about rulers, and measurement in pixel/cm/inch.
tt1:
