There is no reason to be afaid of Channels

So i have just learned about the channels menu in photoshop. I have seen the channels menu before but had no idea what it was used for. It is to see detail and be able to bring it out within the original document. So i dont really have a photo to show an example of what the changes are but i hope by the explanation you will understand. If you have any questions i can try to clarify.

If you have a picture and you know there is detail in part of the image but because it was taken by a digital camera which blended the texture to be smooth you can look at the Channels Menu. In the menu you can check out each channel the Red, Green, and Blue. In one of these channels you will see that the detail that you are looking for has come through. So say that you have an area of red that you know there is detail but when you get it into photoshop you realize you dont see any of the detail. While you are going through the channels menu you will see that the green channel has so much detail, if you move onto the blue you will see there is not much detail, that will not help you. (when you are going through the channels menu you will see that the places within the picture are highlighted are the areas that are represented by the color. Also about 90% of the time you will not need to use the blue channel. However do not dismiss this channel because it may come in handy.) So once you have figured out what channel you need you can go back into the Layers menu you can convert channels into a layer using the Channel mixer adjustment layer. So open your adjustments menu which is under window and make sure that it is open.
And click on the channel mixer adjustments. This will bring up a menu as well as creating a new layer. Make sure to click on the monochrome box which will make the image turn black and white. If you zero out the other colors that you dont need and bump up the layer to 100% that you need. So if you dont need red or blue then make sure that the number that is sitting next to them is zero. Because you need the green layer make sure you bump that up to 100%. This will bring the green so that you can correct the lack of detail. Once you have done this you can go up to the blending modes and choose pin light. Then when you get finished with all that if you feel like the color is to much use the opacity slider on the adjustment layer to bring down the color a little to blend the layers a little better.