I am familiar with (most of the) contents of Angelo Vistoli's notes on Descent theory (Stacks). I am also comfortable with basics of Schemes, their Cohomology (Cech), from Hartshorne's Algebraic geometry.
Now, I am interested to learn some basics on Moduli space/ Moduli problem/ Moduli stacks.
What is the logically next step towards this after knowing about stacks (not algebraic) and Scheme theory? What other prerequisites does one need to appreciate the moduli set up?
Any references are welcome.