Support Debugging Tool Build 17 released This was the first thing I installed for GP 2013.
Support Debugging Tool Build 17 released – Developing for Dynamics GP – Site Home – MSDN Blogs
Install, Upgrade & AdminMicrosoft & the GP EcosystemGP 2013
Archived post from 2012. Dynamics GP and the links it points to have changed since; check current documentation before relying on version-specific steps.