I downloaded the pack and extracted it. I then went to the folder and did sudo dpkg -i *.deb
The installation appeared to complete. I see no new Icons or any changes when I run the BASE and all is still the old version.
Put the following in terminal
sudo apt-get purge libreoffice-core
sudo add-apt-repository -y ppa:libreoffice/ppa
sudo apt-get update
sudo apt-get install libreoffice
And to install the help?
I found this tutorial: http://news.softpedia.com/news/how-to-install-libreoffice-5-0-on-ubuntu-15-04-14-04-lts-and-12-04-lts-488713.shtml