Representations have existed since the dawn of human civilization. In chemistry, we often use shortened and elaborate representations, using wedges, dots, rings, and chains. These symbols form the new language of chemistry and are covered in detail in the chapter 'Drawing Organic Structures' on curlyarrows.com.
CurlyArrows has created a beginner's guide- Introductory Organic Chemistry as a prerequisite to organic chemistry reactions. It comprises 13 carefully crafted, simplified, illustrative, and descriptive chapters.