PNG image format
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 Can I use the PNG format to photoshop and do everyday tasks? 
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 PNG format is primarily for use on the web. TIFF is usually what you want for photoshop as it has more features. But is still a standard format that can be used by different applications. 
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 Yeah... "to photoshop" is a little too vague as to what you want to do. If you're looking for high fidelity image editing and mastering, you'd want something like tiff or raw as @Pete-S stated. If you're just looking to make memes or other time-killing image editing that doesn't require high quality or fine control then you'll be fine with png or jpg. 
