That depends on the field you are entering. If you simply want to get a basic foundation of CAD work and Drafting, then AutoCAD is "good enough", but if you want to get a leg up on your fellow students (ie. your competition) then take CAD courses that reflect the field you want to get into (ie. Civil 3D for Civil). And keep in mind that the majority of "vertical applications" like Civil 3D, or MEP, etc. run off AutoCAD, so anything you learn in a "basic" course will stil apply to the fancier software.
Another good tip, get an AutoCAD "Command Reference" book. It's all well and good to know which buttons to press when, but it's even better to KNOW about the buttons you are pressing, and know the commands that may not have a button to press.
