It's not hard-- you want ~1 gram of protein per day per pound of lean body mass. Keep carbs under 50 grams per day (since you want to stay in ketosis)-- mostly consumed through vegetables, and make up the rest with good, clean fats. That's it, really. Give yourself time to adapt to the no sugar/no grain thing before you get too worked up about it.
I'd limit the fruit during your stay in ketosis to (very) small quantities of dark berries and the like-- this would be a bad time for watermelon. Fruit can be worked back into your diet later.