Most players' first exposure to organized Magic will be at Regular Rules Enforcement Level (Regular REL). These lessons go over the document governing that REL called the Judging at Regular document, aka the JAR. Will also discuss other topics that will help you become a better judge at Regular REL

JAR - Philosophy

JAR - Common Issues

JAR - Unwanted Behaviors/Serious Problems

Answering a Call

Backups

Subjective Calls (Shuffling, Marked Cards, Slow Play)

Putting It All Together: Running Events