Hi sykotykz,
I'm glad you joined us here at FT.

As Ocn VW 1K asked, it would be good to know if anything in particular is on your mind. Otherwise, here are my tips:

1) As others said, get to the airport very early. It can be intimidating to find the counters, gates, get through security, etc. Heck, sometimes even finding the parking lot can be tough.
2) Find your airline and check in. Use the kiosks if you can, it will save time.
3) Don't lose your boarding pass or ID, you'll need both. Keep them handy.
4) Pack light, then lighter yet. Seriously, this is my best tip. (And, a reminder to self!)
5) Know the TSA rules for getting through security- laptops, liquids, nothing sharp, etc.
6) The departure LED boards are organized alphabetically (destination city) or by departure time.
7) Airports can be huge, especially international airports in large cities. Be prepared for shuttles, escalators, long hikes, etc.
The knowledge base here on FT is incredible. If you told us your airline/flight, departure city and destination, people might have some very specific tips for your itinerary.
8) Enjoy your trip!