The strategy guide states to go north at first. Do not do that to save yourself some trouble. First, go south until you reach the building. Enter, then go through the first door in front of you. Kill the Raptor, then go in the next pair of doors. Watch out for the Spitters. Go to a discolored part on the wall. Hit it to turn on the Generators. This will complete your first mission. Then, get the goggles in a room at the end of the hall to your right (when you first enter the building). Then, go to the doors to the left when you first enter the building. Go to the elevator and get some items downstairs. Then, go to the electrified gate. Open it by shooting the gears next to it and enter the forest. Keep going down (for the most part). You will reach a location where Tim calls and instructs you to run like crazy. However, do not run as he advised. After you jump some vines there is the strip that the Triceratops comes down. There is an egg in front of it. Get it, then hug the right wall. Follow the wall down until you reach the end, then go through the rest of the forest. Keep going down, then when you reach the Cement Wall go left, and then down. Enter the building then get Dennis Nedry's Card from a room after you go through a few doors. Go to Visitors Center and follow the strategy guide from there.