How can we reproduce the three-dimensional images we see on a flat, two-dimensional piece of paper? Anyone who draws is bound to face this dilemma.
Transferring space to a plane can be easily expressed by learning perspective and foreshortening.
However, the principles of perspective are difficult to grasp on your own, so it is not easy to reach your goal without help.
The newly translated revised edition of 『Learning Perspective through Comics』 explains the laws of perspective in an easy and detailed manner, so even beginners can easily understand them.

Why bother studying the tedious art of perspective? Of course, many painters and cartoonists don't study perspective at all.
However, I believe that if you study perspective seriously, you can completely free yourself from many headaches.
Objects like people, fruit, and dogs can be drawn without much understanding of perspective, but perspective is essential even when drawing a chair, a fruit bowl, or a box.
If you don't know perspective, you'll either have to refer to photos taken at precise angles every time you draw something, or you'll struggle through trial and error.
However, if you learn perspective well, you will be able to find the basic cube in most artifacts, and if you learn the basic shape well, you will be able to draw all objects based on it.
Perspective is a theory worth taking the time to study.
With perspective, you can seamlessly combine what you see, reference photos, and objects you imagine, creating flawless, lifelike three-dimensional worlds on paper.

---「Author's Note」