Travel to Abia state/Lagos airport

especially seeking tips regards travel to Abia state
Everything from what's acceptable and unacceptable (Igbo), dealing with police checkpoints and possibly bribes? And religion(very Christian); how not to offend!
I see there's been a British consulate warning about travel there. The intention is to travel with a relative, this person isn't close and he doesn't seem too bothered to ask/familiarise with the traveller.
It's difficult to find sensible and current information, there is a lot of scaremongering. If anyone has links ... obviously I will contact the Embassy regards visa and other queries.