PST is a very flexible tool that allows users to perform stellar population synthesis using a variety of SSP models, as well as computing observables quantities such as spectra, photometry or equivalent widths from both synthetic and observational data.
Check the documentation page for extensive information.
Follow the instructions at the installation section in the documentation page for details on installing PST.
The tutorials illustrate the basic functionality of PST through simple example use cases.
If you want to contribute to the project, feel free to report any issues you may find and/or fork this repository and open a pull request.