I need 3 features or hacks for Genesis themes

[whateverfree.com]

Hello

I installed Education theme for my article library and need some hacks for my website.

1. I need the Author avatar and Bio info will display when user click to the author page (ex: http://abc.com/admin/).

2. I need some code to auto display all subcategories on the Category description when users visit the Category page.

3. How to display "Also wrote" (related articles by same author) in a single article. Like the feature at WorldNews theme here: http://deluxethemes.com/newsworld/?p=232

Thanks a lots for your support !
H