Photography is the process of recording pictures by means of capturing light on a light-sensitive medium, such as a film or sensor. Light patterns reflected or emitted from objects expose a sensitive chemical or electronic medium during a timed exposure usually through a photographic lens in a device known as a camera that also stores the resulting information chemically or electronically.The word comes from the Greek words φως phos ("light"), and γραφις graphis ("stylus", "paintbrush") or γραφιη graphe ("representation by means of lines" or "drawing"), together meaning "drawing with light." Traditionally, the product of photography has been called a photograph commonly shortened to photo.Here is another very easy but cool tutorial to do. All you need is a picture of whatever comes to your mind. I am not going to get in to introduction because there is nothing to introduce.
Lets start. Open your picture in photoshop. Here is mine:
Make a duplicate of the background Layer. To make a duplicate of the layer, click the Layer and hold your mouse button and drug the Layer to the bottom of the Layers Palette and release it on the create new Layer icon.
Desaturate the duplicated Layer. You can go Image>Adjustments>Desaturate.....or you can press Shift+Ctrl+U.
Add a Layer mask to your desaturated Layer. Now take your brush, choose a black color and brush your object in the picture, the one you want to keep your focus on. In my case a brushed the glasses. Here is what I got:
And that's it. You can edit the picture a little further like I did, but that's pretty much it.
More Tutorials: 
