Please try our "Getting Started" tutorial from InfoCenter:
http://pic.dhe.ibm.com/infocenter/clmhelp/v4r0m6/nav/2_2_0

Hi Tad,

you might also want to check RTC videos from Rational User Education:
it contains both high-level and detailed/technical information on the product.
https://www.youtube.com/playlist?list=PLDB034BC533455720

Regards,
Stéphane

For non-technical people, starting with Videos on jazz and RTC concepts and overview could be straightforward.
There are many videos in Education site:http://www.youtube.com/user/IBMRationalUE

and I have tried to pick up some for you:

Introduction to IBM Jazz
https://www.youtube.com/watch?v=u_M8jcwuPlg&list=PL894D71E17F1E2074

IBM Rational Team Concert
https://www.youtube.com/watch?v=ILvsGQQqAF0

Rational Team Concert Overview
http://www.youtube.com/watch?v=8SippiZJqqQ&list=PLDB034BC533455720&index=2

Tracking and Planning with Rational Team Concert
https://www.youtube.com/watch?v=j6BsoiKDat0

Introduction to IBM Rational Team Concert v4.x Dashboards
http://www.youtube.com/watch?v=vb4whBRDl5I&list=PLDB034BC533455720&index=8

At the end, you may then need some hands on and "Getting started tutorial" suggested by Piotr can be the one or you may feel comfortable to continue viewing the videos:

Introduction to IBM Rational Team Concert Concepts and Processes, Part 1
https://www.youtube.com/watch?v=ax5eY_Y3A_c

Introduction to IBM Rational Team Concert Concepts and Processes, Part 2
http://www.youtube.com/watch?v=Z9mN5Nm2WtM&list=PLDB034BC533455720