The following are resources for students of all experience levels, from the beginning glider student to CFIG applicant. This page also contains resources for tow pilots and flight instructors.
Glider Flying Handbook (FAA)
Aeronautical Decision Making (FAA) An older Advisory Circular
Jim Burch's Study Guide This webpage is an amazingly good resource for beginning glider students. Includes quizzes.
The Beginning Student
Beginning Student to solo "Roadmap" (Coming soon)
Solo checklist (before going solo you must do this)
The Post-solo Student
From Solo Student to License "Roadmap" (Coming soon)
Private Pilot's flight exam checklist (before taking the practical exam you must do this)
Flight Examiner Expectations - One perspective
The Post-Private Student aka "Crossing the Country with Ease"
The Commercial Pilot
Commercial Pilot's Flight Exam Checklist (before taking the practical exam you must do this)
The Flight Instructor
Flight instructor checklist (before taking the practical exam you must do this)
GHSA Flight Instructor's Material
To-do: SSA Cross Country Handbook
To-do: Introduction to Pilot Judgement
The FARs (Complete and online)
The Transition Pilot
This article from the FAA explains soaring and the benefits of glider experience and training to all pilots:
Gliding Your Way to Greater Pilot Proficiency