First TIME travel advice - passport control

The best thing now is to hurry. In Lagos, you'll go down a flight of stairs. In Port Harcourt you’ll just be funneled into a queue. You’ll find yourself in a badly lit hall in front of the passport control desks. If your flight is the only one arriving at the time, the line should be quite reasonable. Otherwise, get ready for a shock.
Imagine a massive flock of intelligent, wily, ill-tempered, bipedal sheep. Do not, under any circumstances, let anyone barge in line ahead of you. People will pretend to step ahead just to read some sign or another, and stay. They'll kick their bags ahead of you, and step boldly up to them when you aren't looking. They'll do everything up to and including slithering on their bellies to get ahead of you, but I beg you, please, don't let this happen.
Be like a man of steel and let the tempering process begin here. If you don't learn to stand up for yourself, your stay here will be a misery. Most people, if you don't take any of their guff, will back down.
Check that you have your passport and your landing card handy. You should have been given a card to fill out on the plane. If you slept through that bit of your flight after too many of those little mini Gin things then we would suggest that this is a good time to go off in search of one. Fill it in and get back in line.
When your turn comes at passport control, it helps to stand up straight, look straight ahead, and be as friendly and accommodating as a night spent in an economy class seat will allow you to be