But I went to a gym for the first time in like 7 years. Yes I went after the front desk closed because I was anxious. Yes I googled how to do workouts in between sets. Yes I'm tired as hell.
Feeling excited for the next one in two days. Hoping to actually get some mass on my chest and hide/correct my flared ribs.
That's fantastic! Nothing makes you feel like heavy lifting does (well, drugs can I guess.) But long term nothing else.
If you can get on a program and make sure you're gaining weight now, you will progress exponentially faster.
Good luck!
Edit: My favorite beginner's program is this one