Hi,
I am using v7.2 and it has a validation document (.PDF) which gives a description of 6 telemac2d examples. Look for it in your installation folder (documentation/telemac2d/validation is the route in my case).
However, there are no description for every example, what i did when i started was take a look at geometry files with BK to have an idea what kind of problem could be of, after that, i took a look at the steering files, that helped me a lot.
I already verified and i could not download it from the forum, so you can find it in the following link
drive.google.com/open?id=0BxYwOb2RaOSfN1FiaXdfU0VaekE
Hope it helps,
Cheers,
José