Hey need some advice.

I would like to get into the world of photography. I admit, i always had a slight passion for it, but more so now on Intagram (although i want to merge over to Picasa and Flickr), i would love to know a decent camera or DSLR that is inexpensive, i am on a budget. I'm talking 400-500 dollars budget, i see a lot of people on Instagram who take breathtaking photos as well as on my Picasa, i really enjoy it, it tells a story so i wish to be apart of it, i would for some advice thank.