YouTube - EEVblog #1007 - Is a $25 Multimeter Any Good? by EEVblog.
YouTube - EEVblog #1067 - Analog vs Digital Multimeters! by EEVblog.
By Jerry Walker on YouTube:
YouTube - Tektronix 577 Curve Tracer Repair and Demo by CuriousMarc.
YouTube - #290: Vintage Tech: Tektronix 576 Curve Tracer by w2aew.
Paul's DIY electronics blog - Building A Curve Tracer
Paul's DIY electronics blog - Building a Curve Tracer - Version 2
Paul's DIY electronics blog - Building a Curve Tracer - Version 3
Paul's DIY electronics blog - Making Measurements with the V3 Curve Tracer