Trial Office 365 - help

I would like to trial Office 365 and currently have Microsoft for Mac 2011 version 14.5.1 but I don't want to uninstall this, I just want to try it out.  Is there any way I could trial it without having to uninstall my current outlook?  I want to be able to just add it on.  Just want to find out an easy and quick way to trial this for our small business.