What is the difference between "void main()", "int main()" and "main"?

I am a newbie in programming, I started to learn C language. I want to know the what is the difference between "void main()", "int main()" and "main()". I have already check my sources but I can find anything useful for me.

See: FAQ > main() / void main() / int main() / int main(void) / int main(int argc, char *argv[]) - Cprogramming.com