How to reproduce this picture

A quick way to make a photo look like the bottom portion of that graphic would be to apply 3 adjustment layers: 

• Black & White
• Posterize
• Gradient Map

...although it may leave more details in the result than in the sample graphic.

Here's how:

1. Add the Black & White adjustment layer (go to the middle icon at the bottom of the Layers panel and select Black & White... or go to Layer > New Adjustment Layer > Black & White...)
2. With the adjustment layer thumbnail (as opposed to the layer mask) selected, go to the Properties panel
3. Move the sliders to make the desired portions of the image stand out by making them lighter or darker
4. Add the Posterize adjustment layer (go to the middle icon at the bottom of the Layers panel and select Posterize... or go to Layer > New Adjustment Layer > Posterize...)
5. In the Properties panel, set the slider to anywhere from 3-6ish levels--however many variations of the colors you want in the end result (I used 6 in the example above)
6. Add the Gradient Map adjustment layer (go to the middle icon at the bottom of the Layers panel and select Gradient Map... or go to Layer > New Adjustment Layer > Gradient Map...)
7. In the Properties panel, click on the gradient to open the Gradient Editor
8. Go to the Oranges presets, select Orange_05, and click OK
9. In the Properties panel, select Reverse if you need to swap the yellows for the oranges