First pictures

So previously I mentioned I got a new camera. I took a couple pictures at the train station (and one bonus picture in the city) and just toyed around a little bit.

city b&whuntington lirr 1huntington lirr 3huntington lirr 2

Next to learn: what are all these fancy settings in my DSLR like aperture and shutter. how to manual. also long exposure photos seem really pretty and i want to try that sometime. also what the hell is post processing