Incipient DSLR pics

After having used Sony point and shoot digital camera for a couple of years, I recently moved to DSLR. For a while the pictures taken with DSLR camera have appealed to me but I put the thought to own it aside mainly because of being apprehensive towards its portability. I was more of carrying the camera in your pocket and take the pictures whenever, wherever and not worry about the lens or anything. But after I watched the movie "Wake up Sid", I couldn't defer it anymore as I was bewitched by the pictures taken by the actor in the movie. Thence here I am, a noob with a DSLR at his possession, figuring out how to take good pictures. The camera I own is a Canon Rebel T2i (550D). 

Without informing myself about the how-to-dos of the camera, I have already indulged in taking a few pics. Here they are. 

All of these were taken with canon 50mm f/1.8 lens.