Hello,
You can download the French manual to model tides with TELEMAC-2D and TELEMAC-3D, version 6.2, in Home then Training and tutorial section. It contains the methodology and a user manual. This is a common work between LNHE and HR Wallingford.
The English version is to be translated.
The former version of this document in version 6.1 is available in Download then Archive section.
Hope this helps,
Sébastien, Noémie, Michael and Chi-Tuan