Freshman highschool volleyball?

I have a summer camp im gonna do for highschool volleyball and its my first time for trying out for volleyball So do you think you could give me techniques i could use on the court? Their are a lot of REALLY good girls from my midddle school trying you make the team and its a big competion when it comes to making it on the team. I escepcially need help on how to spike and dig. I could p good, set okay but I need to tap it softer, and serve okay. Any drills i could do either single or with someone else?