I am just finishing my freshman year as a physics major. I am wondering what software might be useful to get my hands on at this point? In chemistry, we used computers with Linux because he said they are able to process the information much faster than a Windows-based computer. Will most of the computers I use later on for physics be Linux-based as well? That was the only time I ever used Linux, so I was wondering if I might want to familiarize myself with it more? I have a spare hard drive that I don't use much at all at this point, so I can toss whatever I'd like onto it and was thinking of adding a Linux OS. Is there any point in doing so? What other software is useful? I have seen Wolfram's Mathematica included as well, although I don't have the spare cash for the version I would want to get right now. If anyone has any other suggestions (even if I can't afford it now, but would be useful for when I can), I would appreciate it.