If you are new to Mocha for After Effects or new to tracking, this is a great little quick-start tutorial from Imagineer Systems.
Imagineer Systems video tutorial winning video. Andrew Devis shows how to tack in mocha for After Effects and import track and roto data back to the AE composition. Very clear for those new to mocha!
mocha for After Effects – beginning tutorial from Ross Shain on Vimeo.