You can download a Student version of AutoCAD from the Student Community.
Use This File for the Geometric Construction Practice
This Video goes over the user interface in AutoCAD. It goes over the different parts and organization of the screen and ribbon.
This Video goes over different Selection methods in AutoCAD
This video goes over some of the basic commands and options used to create drawings. It includes Line, Circle, Move, and Object Snaps.
This video goes over coordinate systems in AutoCAD.
This video goes guides you through completing the geometric constructions in Practice 0 (file below)