TD_xxx_V1.tgz and TD_xxx_V1.zip each contain an archive of the initial release of the TD_xxx project.  To use, download and extract either TD_xxx_V1.zip or TD_xxx_V1.tgz.   The Doc folder contains a user manual called TD_xxx.pdf which contains project documentation and example code to get started with.  This manual can also be downloaded directly on its own.