Over the last couple of years UV layout in Maya has changed for the better. In this course we're going to be taking a look at some of those changes as we UV map an entire character
You can just plug the texture file into the bump channel on the material you're using. You may want to convert the texture to a grayscale image just to see what you're gonna get as a bump map but I don't think its necessary.
Many times I just use the texture map as the bump. If your using many high res. images for bump maps (ex: 3000x3000) converting them to grayscale is a good way to save some space.
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