Definitely for advanced users.
The extension can be installed either by obtaining it from the official add-ons websites, or by manually building the XPI.
Clone the repository with git, then run make all
.
The XPI will be called eMatrix.xpi
.
ηMatrix will definitely break the majority of websites you visit. This add-on is meant for people that understand this and have enough knoweledge to understand what it needs to be done to "unbreak" those site.
For now, check the μMatrix home.