For a beginners guide to a Git workflow, click this article by Venkatesh-Prasad Ranganath.
Compute Canada HPC
For a beginners guide on how to run R script with Compute Canada HPC, click this article by Julie Fortin.
Beginner's Ado Programming guide
For a beginners guide on how to write user-written Stata programs, click this Stata blog by David M. Drukker.
Beginner's guide to make an R package in Rstudio.
How to make an R package from Scratch using rstudio