Tomorrow I embark on a new semester and this semester I have the pleasure of learning applied partial differential equations and the software of "ROOT" ROOT: https://root.cern.ch/ So I am here to solicite advice. 1. In regards to ROOT, is there anything that can set me up better for a more successful semester? I am moderately code-savvy. I have it installed on my mac, windows, and linux. The mac is my laptop which I bring to course. Is there any tips you have for working on ROOT? 2. For Applied Partial Differential Equations, here is my situation. I took a 4-week summer course of differential equations. It was rather easy for me, but admittedly now I can barely remember much of it. Applied PDE is a graduate level 481 course while diff eqns was an undergrad 220 course. What's the difference between the two? What is partial vs. regular DE. Are there any good sites that focus on the material that I can browse? What is the main few ideas/things that anyone taking applied PDE is going to learn? Is it possible that I am in over my head in this course? I've done extremely well in all my math courses prior.