Transparent PNG
I am going to teach you how to make a clean PNG.
And we begin:

Go to Windows>>>Layers and right click the layer that says Background. Then select Layer from Background. Now, select the Zoom Tool and zoom into the image as many times as you like. I would strongly recommend that you zoom in 700% or higher (in this tutorial I zoomed in once). Next, right-click the Lasso tool and select Polygonal Lasso. Select a part of the image you want to extract. Take your time and cut out piece by piece so you do not have to scroll while you are selecting. Your image should now look like this. Now, press Ctrl, X, and Enter at the same time to extract the selection and it should now look like this. Continue to do that step until you’ve extracted the whole image. Your ending result should look like this:
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If you’d like to double check your extraction go to Layer>>>New Fill Layer and fill it with a Bright Green color. Move this layer under your background layer. The background of the PNG should be the color you filled in. If you see some spots that need extracting then cut them out on the Background layer. If you do not see anything that does not need more extraction then delete that color fill layer.
Lastly, go to File>>>Save for Web>>>and select PNG-24. Then click the box that says transparency>>>Save.
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That concludes this tutorial~