How to edit my pictures like this?

Http://danielleedevery.tumblr.com/post/1328841785

Its the picture of that person with the purple beanie, Don't mind the picture just how its edited.
I have a Nikon D5000(if that matters)

But how do I edit my pictures so that they look soft like that and have that tone(like what quality of the picture am I supposed to edit like brightness or contrast)

Shoot the photo with a narrow depth of field (low f-stop number).

In photoshop, create a duplicate layer, cut an oval or rounded square with a large amount of feather (30-75 pixels). Use a blur tool or filter, then adjust opacity for the desired effect.

Here are a few websites I'm sure will help. The kind of effect the picture you are looking at has some sort of cold-framing and vintage effect. I think you can achieve this by changing the tint and saturation.

http://www.blog.spoongraphics.co.uk/articles/15-tutorials-for-recreating-authentic-photo-effects

http://veerle-v2.duoh.com/blog/comments/photoshop_vintage_effect/

These are helps on how to do it on photoshop and information on the different effects. Scroll down and search for the one you are searching for.