how do I get out of the first building?
Hey @Nut, some help for you :
*SPOILERS*
* Open the bag, read the postal card, then
* Click on the keyboard to open the computer view, and enter the password (from the postal card) and press Enter
* Cut CCTV, Delete records, and try to destroy the plant
* Leave the computer view
* Go to next building using the arrow on the top left corner
Good luck,