TRTIA itself does not offer training for any Degree of The Radiance Technique®. Authorized Instructors are certified and licensed to offer their own seminars for The First and The Second Degrees. Some Authorized Instructors choose to be listed on an independent website, AuthenticReiki.org.
Radiance Seminars, Inc. (RSI) coordinates and offers seminars in The Advanced Degrees (The Radiant Third Degree through The Seventh Degree and The Official Teacher Training). If you studied The First and Second Degrees with an Authorized Instructor, you can contact RSI for information about studying The Advanced Degrees.