In my opinion your first high is one of the best because you don't know what to expect. The best way I could describe the feeling of being high is the feeling you get after an amazing night of sleep or after a great nap just amplified and stays with you longer. Be sure not to get too high because then you won't enjoy it and just pass out. You might say something stupid or do something stupid, depends on your intelligence, but it wouldn't be on level of what a drunk person would do. You are more yourself when you are super high than when you are super drunk. You won't get addicted to it. The first time I smoked I did on back to back days and then went 6 months without it and then a year after that without even thinking about it.
P.S. don't listen to what some of the people above are saying, you'll still be able function. You ain't crisp but you can function. I did tons of research before my first time and cigarettes and alcohol are way worst for you then weed.