This course teaches you arduino as complete beginner. and you can get the codes used in tutorial on my github account using the link down below.
code-source: https://github.com/ShwaTech/Blinking_LED/tree/main
Code used :
//..................................................................................................//
//copy and paste it in you IDE
int LED = 13;
void setup(){
pinMode(LED, INPUT);
}
void loop(){
digitalWrite(LED, HIGH);
delay(1000);
digitalWrite(LED, LOW);
delay(1000);
}