Kim, the number one thing you can do to make things easier for yourself if you envision doing much post-processing is to shoot your images in RAW format. That gives you the most advantageous starting point, letting you make a very surprising range of adjustments on things like exposure. You can miss it a couple of stops in either direction (over or under) and still pull a good image out of it by waiting to do the JPG conversion on your computer rather than letting the camera do it at the time you take the photo. It is also much easier to get a better start on getting the colors the way you want them because you can easily adjust the white balance from the RAW file. I've had quite a few images that I was able to salvage from the RAW file which would have been completely useless and destined for the recycle bin had I taken them in JPG. At the very least, anything
important (family, events, etc) should always be shot in RAW if at all possible.
What I do is shoot in RAW, make my adjustments for exposure and white balance (if necessary), then save as a TIFF file. TIFF files are large, but they are "lossless", meaning that image quality isn't compromised by the sort of data compression (and deletion of certain data) that goes hand-in-hand with JPG format. If necessary, I do noise reduction on the TIFF file, save it, and then do my post-processing on that TIFF file and save the final version as a JPG.
The space-eating TIFF file can then safely be deleted, since you can always regenerate it from the RAW image if you ever need to.
All of this can be 100% done with freeware, and the learning curve really isn't all that hard. It just takes a little hands-on playing with it to get used to it.
Here is a list of the freeware I use to do all this (click on them to go to the download pages):
GIMP 2.4 Ufraw Noiseware (Community Edition) IrfanView
IrfanView is a good general purpose image browser, and can display your RAW files, making it easy to browse through and selectively delete crappy shots and decide which shots you want to single out for further processing. It also has batch file processing capability for both file renaming and file type conversion. If while browsing, you think the default rendition of the RAW files looks fine, then just batch convert them to JPG and you're done.
For the ones you want to give special attention to, open them with Ufraw, make your adjustments, and save as either TIFF or JPG. That's all you do with this software.
If the image is noisy, then open it up in NoiseWare, hit "Go" (the default settings usually work just fine for most images), and then "Save As". Nothing could be easier, and it can really work wonders on noisy images. The Community Edition is freeware. It can open JPG or TIFF files, but it cannot
save in TIFF format, so you'll be limited to saving as JPG. That usually is not a problem. Also, the free edition doesn't do batch processing, but don't let that bother you.
The GIMP is a freeware post-processing program which is
comparable to programs like PaintShop Pro and Photoshop. Of course, it is not as good as those. If it were, then everybody would use it and the folks who charge money for the other stuff would go out of business. So from a purely economical standpoint, it demonstrably is
not as good. But that doesn't mean that it isn't good. It will handle practically everything you wish to do with an image, and still have tons of crap left over that neither you nor I will ever figure out, much less actually use.
The standard adjustments I make to
every image with it are:
1. Contrast adjustment layer
2. Curves
3. Unsharp mask
None of those are difficult to do with the software, and they can make a very large difference in the appearance.