Two free downloadable PDF of 11x17 posters are available on Esri's Training site. (Sign in to download.)
These are important works for anyone seeking to understand the "big picture" of solving problems with GIS.
For the click hesitant, here are descriptions:
The Language of Spatial Analytics - Use The Science of Where to help you better understand our world. This 11 x 17” poster outlines the questions you can answer with spatial thinking.
ArcGIS Common Patterns of Use - How can ArcGIS work for you? This 11 x 17” poster outlines the 9 common patterns of use for the ArcGIS Platform.