You should take advantage of the student pricing on that. It is an excellent skill set to have, and pretty much the industry standard.
Scipio mentioned Draftsight which is a good free option. I've heard good things about Solidworks (from the same company), but I haven't used it so I can't say how it compares to Autocad.
Scipio mentioned Draftsight which is a good free option. I've heard good things about Solidworks (from the same company), but I haven't used it so I can't say how it compares to Autocad.