My advice would be this; Open an account with Oanda or IG (been out of teh SB loop for a while but I think they come with a good reputation).
If you are more interested in Macroeconomics and the politics of economies, choose Oanda. if you are more interested in stock specific stuff (i.e. individual companies), choose IG.
Then read the following:
Every Day, read the "Lex" column in the FT, and each week read either Investors Chronicle and/or The Economist, depending on your interests. Your library will have access to all three. From these resources, choose two instruments - either two stocks or two currencies - that you believe have some reason to re-price...
for example, you might read in the Economist that inflationary pressures in the GBP are increasing, and that the Korean fiscal deficit is widening beyond control. As such, you choose to be long GBP short KRW. Put the position on and wait until a) you can't resist taking the profits, b) you hit your stop, or c) you change your mind about the trade. Review the positions each week in a diary, making a note of any new developments you have read about that you think are going to influence the trade, and how you feel about the position.
That's it.
Don't think about day trading, don't look at graphs, don't buy a book on technical analysis. Concentrate on your studies and spend a few hours a week doing research / keeping a journal. When you come to interview, this kind of experience will weigh heavily in your favour.
Good luck.