Free economics textbooks online

Introduction to Economic Analysis, by R. Preston McAfee (2007). ‘Open source’ intermediate undergraduate microeconomics textbook. Website also has slides for teaching.

Introduction to Modern Economic Growth, by Daron Acemoglu (2007, draft). Advanced economic growth theory.

The Econometrics of Macroeconomic Growth, by Steven Durlauf, Paul Johnson and Jonathan Temple (2004, draft). Advanced growth textbook.

Environment Economics, by Ross McKitrick (2007, draft). Intermediate environmental economics textbook.

More…