Because the Warped Tour offers so much for you to see and do, it's a good idea to arrive early. Plan to arrive shortly after the venue opens. Once inside, get your bearings. Some Warped Tour venues will have maps of the grounds available, others may have few if any signs to direct you to the various stages. Note the locations of the stages, restrooms and water fountains. You may have only a few minutes between performances of the bands you want to see, so knowing where you're going will help you to move through the venue quickly.
You have two options for getting a schedule of performances: Download it from the official Warped Tour website or pick one up at the concert venue. Note the bands you want to see and the stage on which they are playing.
The Warped Tour offers a lot of options for food and merchandise. Very few of the vendors, even the official-merchandise sites, accept debit or credit cards for purchases. There are ATMs available on-site but they charge fees. It might be best to take cash with you for food, drinks and merchandise.