Change Color Images into Black and White

Step 1:

Click File>Open and locate your picture file.

Copy the image I used.

Create a new layer (SHIFT+CTRL+N) and name it background change the color to #FFFFFF. More the background layer under the layer with your picture.

Step 2:

Make sure you are on the layer with the picture. click Images > Adjustments > Hue/ Saturation  and add the setting below.

Step 3:

Finished work.