Via Jack Tunnicliffe on the AE-List is a brief introduction from Mathias Möhl on the basics of his AE script MochaImport, which simplifies the work with Mocha for After Effects. You can get more info, tutorials, and scripts at AExtensions.
Mathias also has 2 scripts for tracking and masks that could be used in combination with the TrackerViz script; see KeyTweak and Tracker2Mask: scripts with tutorials. If you like his work, please give Mathias a donation or tip to keep this sort of work coming. Be prepared you adjust your volume.