Have ever tried to understand how to get the best images out of your printer? Well, you first have to calibrate your monitor and match it to your printer, then have to understand color space, and... oh well, very few people understand this stuff, and even fewer can explain them well enough for the rest of us mortals to actually implement them.

Here comes the helpful guys on DPReview:

Color Management 101: Part A
- Introduction
- Camera RAW data
- Camera JPEG space

Color Management 101: Part B
- Working Color Space
- Monitor Color Space

Color Management 101: Part C
- Assigning Vs. Converting Color Spaces
- RAW Processor Color Space

Color Management 101: Part D
- Output Color Space (printer, web)
- Gamut and Intent

Color Management 101: Part E
- Soft Proofing

And here is another great article (from a different site) on this subject:
Read: Andre Gunther Photography: Color Management Tips for Photographers