This is only for newbies...
I have just thought about this. Perhaps a way to learn about exposure would be to
Don't rely on your camera's built-in meter. Instead, totally disregard it and decide the exposure using your eye and the "exposure meter we should have between our ears"
I learned exposure techniques in the years before I owned an exposure meter and when working with totally manual exposure cameras. In fact, when I attended the Navy Photo School in Pensacola Florida (1958) we never used an exposure meter for any shots...
Note: this should be for testing only. Don't rely on the "meter between your ears" for important shots..
http://www.photoreview.com.au/tips/s...ithout-a-Meter
Google: "Exposure without a meter" will give you links to many more sites with info on that subject!
TIP: if you have a camera with one or more "user selected modes" have one mode set up for Full Automatic exposure and the other mode set up for Manual exposure. In the manual exposure mode - don't look at the camera's meter. Simply try to decide the correct exposure using the "between the ears" meter.
Shoot two exposures every time. One at the full auto setting and the other at the exposure that you have decided upon without the help of a meter. Easy to do with "User Selected Modes"...
View the difference between these exposure modes and the difference in exposures which produced these images.
The reasons I recommend learning how to determine exposure without relying on a meter is that;
IMO (based on my early experience) you can effectively learn exposure that way
AND
If your metered exposure is way off base - you will immediately recognize that and take steps to correct the exposure. In the bright sun of Vietnam, I knew that my base exposure with a motion picture camera was f/11 using my standard Ektachrome Commercial film. I would frequently test my meters (I always carried two meters) and if one read other than f/11 (or thereabouts in the bright sun) I would know that the meter was off...
ANOTHER LEARNING TOOL:
Another learning tool could be Auto Exposure Bracketing (AEB) which will give you one shot below the metered exposure reading, one shot at the metered exposure reading and on shot above the metered reading.
With Canon DSLR cameras, this is made easy because when in AEB mode and with your camera on burst mode, you will get three bracketed shots every time you press the shutter button. The camera will then stop shooting until the next time you press the shutter button. However, just about any DSLR will allow AEB of some kind.
Using the camera's menu, you can select in which order to have these exposures. I don't recommend the default AEB sequence which starts with a shot at the metered reading. Instead, I recommend starting with less than the meter reading, followed by at the meter reading and then finally, over the meter reading. It might help to make one exposure of your hand or the ground to separate the groups of three bracketed exposures...
It will be easy to view each group of exposures and determine which exposure was correct for that subject/scene. I think that this could be a learning experience for any photographers who are not sure of exposure and an insurance policy for some tricky lighting situiations...