In West-Africa there is also a special way of handshaking with a fingerknip. Learn it, but don't use it with traditional or older woman and with old men. It's to them to choose for it.
And when you shop it's ofcourse very usual to bargain. However it isn't normal if you have to bargain for food and drinks and in the luxury stores. Further on: don't be offended if fathers or mothers want you to marry their daughters, because they want them to go to the western world. Some African friends will also try to bring you a girl for f*cking, even kids or their sisters. It's a sign of friendship. I am homosexual, so I didn't accept any of the many offers, but it's no problem if you want to accept one (but be careful with AIDS and I don't think that its a good idea to f*ck kids) .
