The best advice I have for a first game...Don't get fancy.. a white hat I work with has this to say before every game.. Look for nothing and see the obvious, hustle and be deliberate... after you digest it, it sums up what to do pretty well...good luck and have fun.... Like Rich said you only get one "first" varsity game, so enjoy it..you will also find the higher levels you go the easier the games are to work because mistakes and penalties stick out much more than at a 7th grade c squad game where just getting 11 on the field let alone 7 on the line is a chore