Someone remarked recently on this blog that proportional representation (PR) is notoriously difficult to explain, particularly in a country like Lebanon that already has a kind of proportional quota system in place.
The Civil Campaign for Electoral Reform (CCER) has produced a great animated video that breaks down the proposed system and makes it pretty straightforward to understand. My only quibble with it is that it assumes that PR has to be a closed-list system, when it certainly does not. Have a look at the video below.
Another resource worth checking out is the Public Policy Forum for Electoral Reform and Proportional Representation, which has a bunch of videos here.