Recent Target School Acceptance, What Should I Learn For Technicals?

I've already gotten into a couple of quote-on-quote target schools, and I am waiting on the Ivies in late March. With that being said, I am currently learning technicals through reading through Banking at Michigan's guides, taking Wall Street Prep courses, reading through BIWS guides, and learning primarily accounting principles in depth. What guides, books, or courses do you recommend for me to learn from to best prepare myself to garner at least a middle market internship the summer entering my sophomore year. Thanks.