This toolkit intends to lead the non-specialist reader through a logical sequence in understanding contracts. Section One sets the stage with background context. Section Two, who the players are, establishes the formal parties to a petroleum contract and the normal provisions of who does what and who decides what according to the contract. Section Three, 'The Money', goes to the heart of the negotiation and deals with all the different revenue streams and tools that go into constructing ever more complex financial arrangements. Section Four deals with the linkages between the petroleum industry and economic development as a whole in the producing country. Section Five looks at clauses relating to health, safety and environmental protection. Finally, in Section Six, Layers Yammering On, looks at dispute and arbitration procedures.