package manager

synaptic, also called 'package manager' on most mint desktop menus can be used to;

• search for software
• install software
• remove packages(software)

follow the links for instructions;

• http://community.linuxmint.com/tutorial/view/1266
• http://www.nongnu.org/synaptic/action.html
• http://en.wikipedia.org/wiki/Synaptic_(software)
• https://help.ubuntu.com/community/SynapticHowto
• https://translate.google.com/?hl=en&tab=wT

locate a ppa;

• https://github.com/two-dogs/the-kennel/wiki/personal-package-archive