I think the best way, at least for me, is to work your way backwards. Come up with an idea, and then figure out how you can create it... Most people I know who created successful projects (millions, tens of millions of users, etc) did this. Google, IRC, etc are your friends, along with your local bookstore.
[Edit]
I also want to support cmos' point that you should try to see the world during this time - youth is far more valuable than money, and the friends you make when you are young are the ones you remember forever. Especially ones made on random travels in random cities/countries.
Comments
I think the best way, at least for me, is to work your way backwards. Come up with an idea, and then figure out how you can create it... Most people I know who created successful projects (millions, tens of millions of users, etc) did this. Google, IRC, etc are your friends, along with your local bookstore.
[Edit]
I also want to support cmos' point that you should try to see the world during this time - youth is far more valuable than money, and the friends you make when you are young are the ones you remember forever. Especially ones made on random travels in random cities/countries.