Place one portal on the angled platform, and another on the right wall. The button on the left drops a cube onto the angled platform, and the button on the right raises a barrier. Put it on the button to activate a staircase to the exit. Shoot a portal beneath it, and one near you to grab it. Press the button on the right side of the room and it will release a cube on an isolated platform across from it. The entrance to this chamber is blocked - fire a portal on the far wall, and one on the floor beneath you to get in. There is an orange portal above you - shoot your blue portal on a wall or beneath you and enter it to fall into the ceiling, breaking it and forming a ramp. You'll find yourself trapped in a room with a glass ceiling. Acquire it the same way you did during the last test, and place both cubes on the buttons to open the door. The second cube you need is in another pit. Across from you is the second platform - fire your blue portal behind the cube, then walk through the orange portal to grab it. Fire your blue portal into a wall and walk through it to reach the first platform. The next chamber contains two elevated platforms. Place the cube on the button to open the door. Jump into the pit, fire a portal on the wall, grab the cube and walk through it. The first chamber (with I'm assuming is 03, though it doesn't appear to be numbered) contains another simple cube/button solution. Fire your blue portal on a wall near you and walk through it to cross the gap, then shoot one across the second gap, by the exit, and walk through the orange portal. Walk up the broken catwalk and continue through the halls until you jump back into the test chamber. Take some time to look at the art, then create a blue portal in a wall and exit the area through the existing orange portal. Test Chamber 02ДЇollow Wheatley's instructions until you've acquired the portal gun (yay!). Finally, exit the chamber by pressing the button to open a portal in the third room. Next, press the button in front of the left room, enter it, and place the box on the button. Press the button in front of the room to the right, which contains a box, then walk through the portal on the rear wall to acquire the box and bring it back. This chamber contains three glass rooms, and a portal can be formed within each by pressing the button in front of it.

In other words, put the cube on the button. The first test simply introduces the relationship between cubes and buttons.

Portal 2 pc part 1