Absolute beginner... just got nex-5r today.. here some pics i took

Hi, I am an absolute beginner with photography... and this nex-5r is my first camera... don't really know how to shoot yet but I read the manually and used aperture priority mostly and these are the pictures I took.  Hope my pics get better but overall I think I took some pretty good pictures..

here they are..

thats all for now... came was on iso auto first 100 pics i took, then changed it to 100 after that.

any quick tips?

thanks