Install the software
In order to do the analyses shown in the videos, you need to install some software and R packages on your computer. The software includes R and RStudio. The R packages includes the package secr and all its dependencies.
You can download R from this website: https://cran.r-project.org/
You can download RStudio from this website: https://www.rstudio.com/products/rstudio/download/
The R package secr written by Murray Efford can be installed from R:
Quick intro to RStudio
There are good introductory tutorials online. You can find them by searching for 'RStudio tutorial' on YouTube.com. Here are some recommendations:
One tutorial that I really liked was this one:
It is a great, basic introduction to RStudio and its four panels.
This tutorial goes into a lot more detail:
If you manage all the material in here, you will be well prepared for working with RStudio and R. Note: the tutorial starts with the instructor working in R (outside RStudio) but switches to RStudio after a few minutes.