Could Someone explain me what is the definition of artificial neural network?

I would like to know about What are the applications of artificial neural networks?

I am a bit confused that how do artificial neural network works?

Could someone please tell me how the genetic algorithm works?

Can anybody explain me what are the advantages of using genetic algorithm?

I am a bit confused that Is it worth learning artificial intelligence? please explain me

what can AI be used for? Can you explain with an example? Thank you..

Could someone give me a understandable answer for what technologies are used in AI?

I have went through different websites but I am still confused that what technology is used for artificial intelligence? Can anyone explain me..

Could someone explain me what skills are needed for artificial intelligence?