Arduino Crash Course
https://www.programmingelectronics.com/arduino-crash-course/
Arduino to Go website by Jody Culkin
https://arduinotogo.com/
Using Example Code:
For many projects, the Arduino IDE Example code samples are a useful starting point for getting syntax correct.
For more detailed help, consult the Arduino Language Reference
For specific devices, consult the example codes that are a part of the library, such as this servo example:
/*
Controlling a servo position using a potentiometer (variable resistor)
by Michal Rinott <http://people.interaction-ivrea.it/m.rinott>
*/
#include <Servo.h>
Servo myservo; // create Servo object to control a servo
int potpin = A0; // analog pin used to connect the potentiometer
int val; // variable to read the value from the analog pin
void setup() {
myservo.attach(9); // attaches the servo on pin 9 to the Servo object
}
void loop() {
val = analogRead(potpin); // reads the value of the potentiometer (value between 0 and 1023)
val = map(val, 0, 1023, 0, 180); // scale it for use with the servo (value between 0 and 180)
myservo.write(val); // sets the servo position according to the scaled value
delay(15); // waits for the servo to get there
}