Hi Leticia,
Please have a look on below TM 9.1 links, not sure whether it will fulfill your requirement or not. As you know that TM new module we may not get full document.
http://help.sap.com/transportationmanagement91
http://scn.sap.com/docs/DOC-51084
https://saptmpodcast.wordpress.com/
Thanks,
Murali