We can say with reasonable confidence that internet access to information and training will stay as good as it is now or more likely vastly improve in the future. As such there is very little value to learning large amounts of information or specific skills, instead you should look for courses that give you good transferable skills, and learn other things as needed.
Personally, [with standard disclaimer against generalising from one example] I've found studying philosophy extremely good in those respects. It contains a lot of the general rationality and thinking skills we discuss on Less wrong, and a chance to practice them beyond understanding in theory. And once you have the ability to rationally assess arguments and draw out the best parts it becomes exponentially easier to learn and do well in other subjects. A good department will also emphasise clear writing and presenting your arguments persuasively. Given your stated interest in mathematics and compsci Formal Logic might be particularly god for you.
N.B.: This discussion isn't up for mainstream article status, as far as I'm concerned (unless someone else wants to take it and run with it). I just didn't know how else to direct an important question to the LW community in general.
I'm currently a first-year university student in Vancouver, Canada, attending UBC. I have a trust fund and otherwise I will not need to worry about paying for my undergraduate degree. I am open to the idea of going to grad school. So, I have the luxury to take my time in my studies and there are lots of options I can choose from. Majors I'm considering are Cognitive Systems, Economics (and philosophy or math or stats), English, Philosophy and History of Science, Mathematical Sciences/CompSci, or Psychology. I'm open to other options. So, have at it with your suggestions.
Specific Questions:
Should I care more about making money or doing something that I have a "passion" for?
How will this allow me to maximize my production of utilons?
What else should I keep in mind?