This document discusses different ways of classifying resources. Resources can be classified as natural, man-made, or human. They can also be biotic or abiotic, renewable or non-renewable, owned individually, by a community, nationally, or internationally. Finally, resources can be potential, developed, stocks, or reserves depending on their status and accessibility. The key classifications covered are natural vs man-made vs human resources, biotic vs abiotic, and renewable vs non-renewable.