Further reading
The TikZ manual is an excellent and comprehensive reference book. We will refer to it many times. You can find the manual at https://texdoc.org/pkg/tikz in PDF format and at https://tikz.dev in handy reflowable HTML sections, which makes it easier to read on a smartphone or tablet.
The LaTeX Graphics Companion by Michel Goossens, Frank Mittelbach, et al. is a comprehensive book about creating LaTeX graphics. With the first edition published in 1997 and the second and latest edition published in 2007, it doesn’t cover the newest developments, even though there’s a reprint of the second edition from 2022. When I bought the reprint and noticed that TikZ is completely missing in that book, I decided to write the book you hold in your hand now.
PSTricks: Graphics and PostScript for TeX and LaTeX by Herbert Voss is a great reference book specifically about PSTricks with many examples.
MetaPost: Grafik für TeX und LaTeX by Walter Entenmann is a...