First Attempt at Street Photography with the LX3.

Looking for some feedback on some photos i have taken with the LX3. I am a totally beginner, or 'noob' as they say. I know nothing about the principles of photography and all that jazz, but my intrigue in 'street photography' has led me to test the waters and take some shots around town. all criticism is welcome and much appreciated, thanks.

(photos 1 and 3 were touched up in Lightroom) the rest were shot using the in camera black and white shooting modes.