How to make 2 new widget area

Hi all,i m very new at wordpress so please be gentle with me 🙂
I switched week ago from blogspot,where i know (learned) how to do everything i want,but on wordpress which use php dont know a thing.

So i found template that i like and its missing one thing which i struggle to find and done for a week.So i ask here.

As you can see in screenshot pic of my theme layout i want to add two new widget area below post area.

http://i54.tinypic.com/2rpy1oz.jpg

On those widget i want to put anything i like.For example on the left side something from one category for example sport and on right two from different category.

Please guide me step to step as i say,i m newbie at wordpress.Thanks