There are a couple of new 1-pagers I created for Wall-Skills.com:
A Mini Design Studio is a short workshop to design single elements such as a graphical interface, short text, etc. It’s useful for product teams that jointly want to shape their product’s face.
Simplicity is 1 of 5 core values in eXtreme Programming, but what does “simple” mean exactly? Check out rules for simple code.
A good user story fulfills the INVEST criteria
A Sprint Goal allows the dev team to make good tradeoffs even if they can’t check back with the PO.