@KF0UNK I was exposed to LCWO in the CWOPS fundamentals course last January. Powerful tool. The student resources are available to all at https://cwops.org/cw-academy/cw-academy-student-resources/
I’d suggest the LCWO homework parts of the fundamentals course. It dramatically helped me learn to copy characters in quick succession and address problem characters. The homework does a great job of building your capabilities. Note that you really need to be scoring about 70% to be building your skills.