1 Tutorial 01 for Arduino: Getting Acquainted with Arduino
Widely cited as the place to start with Arduino, a tutorial series that explains the electrical basics alongside the code.
Channel
Jeremy Blum
10 recommended videos. Channel on YouTube
2 Tutorial Series for Arduino
The full Jeremy Blum Arduino series as a playlist, treated by many as a free course that covers the fundamentals from scratch.
3 Tutorial 05 for Arduino: Motors and Transistors
Part of Jeremy Blum's Arduino series, driving a DC motor through a transistor; followed by beginners, who often then ask about base resistors and battery choice.
4 Tutorial 1 for Eagle: Schematic Design
The first of Jeremy Blum's Eagle tutorials, covering schematic design, which many hobbyists credit with getting their first boards designed and manufactured.
5 Tutorial 02 for Arduino: Buttons, PWM, and Functions
Jeremy Blum's second Arduino tutorial, often pointed to for explaining button debouncing and why a pull-down resistor is needed on an input.
6 Tutorial 2 for Eagle: Printed Circuit Board Layout
Jeremy Blum's second Eagle tutorial covers laying out and routing a printed circuit board; first-time designers follow it for their first boards before sending them to a fab.
7 Tutorial 03 for Arduino: Electrical Engineering Basics
An episode of Jeremy Blum's Arduino tutorial series, widely praised for explaining resistors in a circuit and reading a potentiometer, especially for newcomers.
8 Tutorial 10 for Arduino: Interrupts and Hardware Debouncing
Part of an Arduino tutorial series covering hardware interrupts, often pointed to for its hardware debouncing of a push button with an RC filter and Schmitt trigger.
9 Tutorial 06 for Arduino: Serial Communication and Processing
Jeremy Blum's Arduino tutorial on serial communication, pointed to for understanding why incoming characters arrive as ASCII codes and how to convert them to numbers.
10 Tutorial 09 for Arduino: XBee Wireless Communication
A tutorial on wireless serial links between two Arduinos using XBee modules, suggested as a starting point even for people using cheaper radios.
