A QUICK GOTCHA WITH THE P KEY IN CAMERA RAW
Here's a little "gotcha" from the last tip. Remember that little preview checkbox we talked about? Well it only displays a before/after view of the current panel you're working in. For example, say you make a bunch of changes in the Basic panel (Exposure, Blacks, Saturation, etc…) and then switch to the HSL / Grayscale panel and make a bunch of color changes there. If you turn off the Preview checkbox while in the HSL / Grayscale panel you'll only see the before and after views of the effects of that specific panel. In other words, your Basic panel changes that we mentioned first will be turned on unless you go back to that panel instead.