I'm a beginner

Hey Guyz.... I'm a beginner in arduino. I want some help from all of u almost bots-guyz. My first question is what is the component 1 in arduino uno board? I didnt understand what is digitalread() actually?

What do you mean by "component 1"?

digitalRead() is the function that gets the value (HIGH or LOW or 1 or 0) of a digital pin set as pinMode(pinNumber, INPUT); or pinMode(pinNumber, INPUT_PULLUP);

Note that all Arduino function and variable names are case sensitive so that "digitalread()" won't work.

There is a huge amount of information in the Reference section of this website