Introduction
Graph theory is a branch of mathematics that studies the properties and relationships of graphs, which are structures made of vertices (or nodes) and edges (or links) that connect them. Graphs can be used to model many kinds of phenomena, such as networks, maps, circuits, games, puzzles, and more.

Contents
Basics of Graphs
Planar Graphs
Other Materials
- Gabriele De Luca, Introduction to Graph Theory
- Douglas B. West, Introduction to Graph Theory
- Reinhard Diestel, Graph Theory