Reading Material: [K] Chapter 2. [K] A Modern Introduction to Algebraic Stacks
Reading Material: [AG] Subsection 5.2.2. and 5.2.3.Exercises: [AG]: 5.2.2, 5.2.3, 5.2.7, 5.2.10, 5.2.11, 5.2.12, 5.2.13, 5.2.14, 5.2.15, 5.2.17. [AG] Algebraic Geometry and Arithmetic Curves