Link author's name to the author's posts archive? ?

[Matus]

I'd like to know how can I link author's name in author box below post to the author's archive page.
For example, post was written by Brian Gardner so when you click on his name, I should be redirect to http://example.com/author/briangardner

Also, I was wondering if it's possible to display author's gravatar image next to his/her name in entry meta section (above content)? I'm looking for something StudioPress have on their blog. Btw, StudioPress blog has amazing design ?.
Illustrated image of what I mean ?’

I'll appreciate any help.

[Matus]

*update*

Image above isn't displaying, you can find it here

[Author]

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