The 8th Edition of Fundamentals of Applied Electromagnetics by Fawwaz T. Ulaby and Umberto Ravaioli features a structured system of solutions available through several official and verified academic channels. Applied Electromagnetics/8e by Ulaby and Ravaioli Official Solution Resources
Electromagnetics is spatial. Take the field plots from Chapter 4 (Electrostatics) and redraw them by hand. This builds intuition. The 8th Edition of Fundamentals of Applied Electromagnetics