Digital Circuits Courses

Introduction to Electronic Circuits
NPTEL via YouTube

Digital Circuits and Systems
NPTEL via YouTube

Basic Electronics
NPTEL via YouTube

Crash Course Electronics and PCB Design
Udemy

Introduction to Digital Circuits - Digital Logic - RAHDG201
Udemy

Introduction to Electrical Engineering
Indian Institute of Technology Delhi via Swayam

According to Pete - Digital Circuits
SparkFun Electronics via YouTube

Digital Circuits Lecture - Introduction to VHDL
Colin O'Flynn via YouTube

Digital Circuits Lecture - Summary - Finite State Machines
Colin O'Flynn via YouTube