Grace,
I was once in your position whereby I was either new to the digital world, or new to a particular camera.
I found that carefully going through detailed reviews, as well as user reviews helped me glean useful information.
I later learned that where compacts and prosumers are concerned, since their design(s) usually mean that there are limitations, looking for other user groups on the net and their 'tips and hints' provided more information on maximizing the use of a particular camera.
Try Googling 'Leica D-LUX 4 reviews' and 'Leica D-LUX 4 tips and hints'. Also search for the Leica forum and don't forget to read and understand the manual first.
Alternatively, I know of at least one experienced photographer who conducts basic photography lessons which include a portion on understanding how to use your camera. Not me ah.
All the best.