Getting started with Lego 12v trains part 5: Supplemental wagons

The fourth part of a series detailing how to enter the world of Lego 12v trains. This part explains the supplemental wagons plus 7810, but not the push or trains as well as including my opinion on which would be a good purchase once you have a running train and loop of track. All sets overviewed in the video (numbers 7810, 7813, 7814, 7815, 7816, 7817, 7818, 7819, 7820, and 7821) can be puchased on BrickLink or eBay depending on availability in addition to other sites.