I'm finding myself needing to learn about operations research. I'm planning to just find a textbook (or some other medium, such as an online course) on OR and learn from there. But I don't think I have the needed foundations to even start learning.
I have a good amount of combinatorics, linear algebra, vector calculus, and differential equations under my belt, but am lacking in statistics knowledge. I assume OR is largely a matter of statistics, so that's my main concern.
In terms of statistics knowledge, where should I start and what should I be trying to work towards with the goal of eventually learning about OR?
As a side question, if you have any recommendations for textbooks or other sources I can learn from I'd much appreciate it!