I’ve already known a lot of things about Excel and I used this knowledge in the last job I had. But I percept I forgot some little things and now I’m reviewing them. I’ve got some lessons from great universities on the web and, after the review about the basic stuff and the functions, I’ll learn more about graphics (I know just the basic too).
In an job interview, the guy asked who knew about macros and no one answered. So, it’s a good thing to learn too.
Excel isn’t a program I use in my days (on college, I used only in the begginning), but it’s something they always ask in the job interviews.