The American Diabetes Association describes what diabetes is, the differences between Types 1 and 2, and what causes Type 2 in “The Diabetes Advisor: Type 2 Diabetes,” available at http://professional.diabetes.org/content/PML/Type_2_03a577ec-a58b-4ecd-a88f-72a29c46e32c/Type_2.pdf. The resource describes available treatments and explains the ABCs (A1C, Blood pressure, and Cholesterol levels) of diabetes to help patients understand how well their treatment is working.