The article provides an introduction to the Swampland program, which aims to distinguish effective theories that can be completed into quantum gravity in the ultraviolet from those that cannot. It covers a range of ideas, including the Weak Gravity Conjecture, compactifications of String Theory, and the de Sitter conjecture. The article begins with a focused introduction to String Theory, covering topics such as the Nambu-Goto and Polyakov actions, the string worldsheet, and the string spectrum. It then discusses the Swampland Distance Conjecture and the Weak Gravity Conjecture, exploring their implications for compactifications of field theory and string theory. The article also delves into the Species scale and the Strong coupling, and presents various Swampland conjectures, including those related to moduli space, non-SUSY AdS, and Stückelberg. Additionally, it discusses the de Sitter Conjecture and its implications for cosmology. The review aims to provide a practical and coherent starting point for those interested in studying the Swampland, emphasizing the importance of string theory and quantum gravity arguments in understanding the field.The article provides an introduction to the Swampland program, which aims to distinguish effective theories that can be completed into quantum gravity in the ultraviolet from those that cannot. It covers a range of ideas, including the Weak Gravity Conjecture, compactifications of String Theory, and the de Sitter conjecture. The article begins with a focused introduction to String Theory, covering topics such as the Nambu-Goto and Polyakov actions, the string worldsheet, and the string spectrum. It then discusses the Swampland Distance Conjecture and the Weak Gravity Conjecture, exploring their implications for compactifications of field theory and string theory. The article also delves into the Species scale and the Strong coupling, and presents various Swampland conjectures, including those related to moduli space, non-SUSY AdS, and Stückelberg. Additionally, it discusses the de Sitter Conjecture and its implications for cosmology. The review aims to provide a practical and coherent starting point for those interested in studying the Swampland, emphasizing the importance of string theory and quantum gravity arguments in understanding the field.