SIDEBAR HELP! ASAP PLEASE

Hello I am trying to create my own theme so far so good. almost done.

Just need to know how to split up the sidebars so they have a section for each item you add in for instance – Text widget and a section for latest posts.

Please see below link left hand sidebar homepage for example of what I am trying to achieve.

http://demos.ithemes.com/addington/

Please help need to know asap

Justin