I am in my final semester graduating from a liberal arts college (physics/math major) and intend to study high-energy theory in graduate school. Coming from a smaller college I have not had the opportunity to take courses in partial differential equations, integral equations, or numerical/computational methods.
What resources, in the aforementioned fields, might one recommend to a student looking to get sufficiently up to speed for graduate level coursework and research (n.b. I do solid math background, in general, including linear algebra and complex analysis, which might come in handy for such topis/learning)?