I need advice! After graduating college in 2007, I've been in the Army fighting wars and the like, instead of touching anything mechanical engineering. I recently left the service, and was lucky enough to land a job in manufacturing/automations that I'm extremely happy with. We essentially build high-cost, low-volume robots and machines to manufacture or modify our customers' parts and products. I am absolutely prepared for the leadership/communications component, but undoubtedly ill-prepared for anything engineering or mechanical in nature. I roughly recall broad principles like St. Venant's, but I'm utterly frustrated in having retained marginal knowledge with math, analysis, etc. What's the best "good enough" and timely approach to becoming an expert again in mechanical engineering and design? Given the industry I'm in, which topics should I focus on? I've been brushing up on SolidWorks (would have started earlier, but the $5K bill wasn't exactly my cup of tea). I've also been reviewing with Shigley's Mechanical Engineering Design; what other books are must-have? Thanks in advance.