The paper “PESSTO : survey description and products from the first data release by the Public ESO Spectroscopic Survey of Transient Objects” has been submitted to A&A and is available on the arXiv as a preprint here.

The PESSTO SSDR1 spectral data was released in January 2014 and is available from the ESO archive search and retrieve interface.
This included EFOSC2 and SOFI spectra. In September 2014, ESO released version 2, which now includes reduced and calibrated SOFI images. This release concludes SSDR1. The second full data release will come in early 2015.

If you would like to download the full data set, click here to will find a useful summary and detailed walk through pages