It's on the back wall, near the stalls, and it's labeled with your name, 'Freeman.' Press the middle button on the console to open the storage pod, then walk down and put on the suit. Walk into the back, where the HEV suits are stored. Head down the hallway until you come to the locker room. The test chamber is to the left, but you need to put on the HEV suit before you'll be permitted access. Talk to the security guard at the front desk, then head down the hallway. Follow him to the security door, and he'll let you in. There are plenty of supplies in Black Mesa, but sometimes you have to search for them. I'll assume you're planning a normally difficult workday, and also that you'll do some things on your own, such as search boxes in the workplace. You never know what might come in handy later.
Look around the various locales, and pay attention to the voice on the loudspeaker.
You've got a long day ahead of you, and this is probably the only chance you'll get to relax. Welcome to the Black Mesa Research Facility
