Please consider exploring EconData, which is a data repository that provides up-to-date structured public economic data, through an R package or an Excel Add-In. The data are sourced from StatsSA, SARS and the National Treasury budgets. Access is free to researchers. More information is at https://econdata.co.za/support/Â
To learn R (the programming language) for the first time, please refer to this blog post.