I just brought one of these
Panasonic Lumix DMC-LX3 Review: 1. Introduction: Digital Photography Review
It's meant to be a very good camera, something purchased just before you step-up to a dslr. Although I like dslr's I know I wont get as much use out of one, due to it's weight and bulkiness. I think the lx3 will allow me to learn a lot of manual functions that you expect in an dslr and if I use it enough, then I might think about a DSLR. If I was to go for a DSLR I would choose canon 5d mark ii.
I think there will be a large learning curve for me with learning the manual functions, but I think learning the manual functions like fstop and aperture will help me push my photographic skills.
A good book that explains the basics of photography, is a old book called
Amazon.com: Black and White Photography, Third Revised Edition (9780316373050): Henry Horenstein: Books No digital cameras there, but it explains fstop aperture, depth of field etc in laymens term.