Tú commands: Grammar guide

What is a tú command?:

• The commands we're learning now are for telling people (our equals) what to do (in a nice way!).
  
  
• We'll start by learning the affirmative commands (Tell me what Juan said!), because negative commands (don't touch that!) are different.
  
  
• We'll also limit this lesson to the tú form, since formal Ud. and Uds commands are done differently.