I agree that www.simplycharlottemason.com
explains a lot. Also Wikipedia has a pretty straighforward article about her and her methods.
We have only been homeschooling since Jan of this year, and in that half year I found that my daughter really needs a structured approach. So this fall I am going to try harder to "do" Charlotte Mason--so far I have just been loosely incorporating some aspects of it.
Short, timed lessons especially are really needed for my dd because otherwise she will daydream and dawdle forever. I'm going to make a timetable as well and try to stick to it.
And I'm going to try harder to make sure my kids spend as much time as possible outside. Lots of outside time should be one of the benefits of homeschooling!
I'm reading the first book in her Original Homeschooling Series right now, and I'm really enjoying it and getting some great ideas. Although a few things she mentions in there are laughably out of date (for example mentions of governesses), overall I think her approach to education is wonderful. I like that it is gentle and yet firm, and I love that she places first importance on the development of the child as whole person, not just their intellectual development.