The Prosperity Gospel is the understanding that God wants his people to be rich, happy and healthy and true Christian faith results in these things. Faith is demonstrated by how much a believer is willing to give. Thus the greedy have typically loved to swarm into churches who preach this, a doctrine to comfort their idolatrous hearts.
Tragically, this teaching is very attractive to the destitute, who may be willing to pay extraordinary amounts of money to receive ‘blessing’.
Take a look.
Also, I’d recommend checking out the Lausanne Movement’s website. Full of fantastic resources.