Stoichiometry

Stoichiometry is where I have seen all of our chemistry come together. I never thought I would be able to figure out how much of reactant is needed to form another amount of a product simply by having a balanced chemical equation and the periodic table.
Here are some helpful links:
Stoich and balancing
Khan Academy Stoich and Reactions

I am often confused by which problem to set up and which reactants and products to include in the setup.