3 resources.
Kirchhoff's current and voltage laws with a sign-convention table, a worked two-loop circuit, the balanced Wheatstone bridge, and common mistakes.
Thevenin's and Norton's theorems step by step, a worked reduction with a short-circuit cross-check, solving for a load, maximum power transfer, and common mistakes.
Ideal op-amp rules, inverting and non-inverting amplifiers compared, the voltage follower, a summing amplifier, and common mistakes, with worked examples.