Tried installing i3wm from these instructions using the Ubuntu ppa http://i3wm.org/docs/repositories.html

Got this error when I typed in the final command apt-get install i3

sudo apt-get install i3
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
 i3 : Depends: i3-wm (= 4.6.1-1+g4.6-88-ge99158e1) but it is not going to be installed
E: Unable to correct problems, you have held broken packages.

When I tried downloading the .deb file and running it I get an error in the software center saying

"Dependency is not satisfiable: i3-wm (=4.5.1-2)

Any ideas I am pretty much a noob