A guy named Paddy Joe Shannon has written and presented an excellent primer which can be downloaded as a BitTorrent file from socialist-tv.com, or watched in its entirety on youtube. To do the latter, go to youtube and search for “Capitalism and Other Kids’ Stuff“.  Several videos will come up.  Since youtube only allows you to upload 10 minutes of video at a time, this roughly 50-minute piece is in 5 chunks, clearly marked.  When you have the time, watch through them all in order.  Inspiring.