This book contains the source codes for the examples from the book Unlocking LaTeX Graphics: A Concise Guide to TikZ/PGF and PGFPLOTS. See https://latex-graphics.com for more details.
Visit https://www.overleaf.com/read/gttkmrwmdtps#999b73 to see these files on Overleaf. You can click on any file and compile it there. You cannot edit unless you copy the project (Menu -> Copy Project) to your own overleaf account.
Visit https://github.com/tgkolda/latex-graphics-book-examples to see these files on GitHub. You cannot compile on GitHub, but you can download the files and either compile them locally or upload them to Overleaf.