If you haven’t got enough, then here are more excellent (free) resources to deepen your knowledge
Lovelace, Robin and Nowosad, Jakub and Muenchow, Jannes (2019). Geocomputation with R. https://geocompr.robinlovelace.net/
R as GIS for Economists https://tmieno2.github.io/R-as-GIS-for-Economists/
Rspatial website with examples https://www.rspatial.org/index.html
Spatial cheatsheet https://github.com/rstudio/cheatsheets/blob/master/sf.pdf
University of Edinbourgh Coding Club tutorials https://ourcodingclub.github.io/