I Got An Interview

I got interview opportunity from big top IT tech company in the world. I will not mention the name but I believe you know it. I passed their first interview with the recruiter then they arrange me interview with the user. I felt afraid and worried i began questioning myself am i good enough for this position? since i realize i didn't have much experience on this field. It's really my dream company i just worried if i might be fail. I am trying to cope my mind. I don't know what should i need to prepare. I feel like clueless I never been so nervous like this before..Maybe i just afraid to be fail. I tried to accept the failures but for this time i am not ready to face the reality.