It is current policy that mentors and coaches are not allowed to work in leagues in which they still referee nor provide feedback to referees with whom they have worked in the past year. If you still plan on actively refereeing in many leagues, you should wait to become licensed as a mentor.
Courses will not be offered regularly. Approval to take a mentor course must be approved by the SDA and may be denied without reason. Instructional material will be online through the US Soccer Learning Center. Mentors must then complete three in-person, practical assignments of leading a video analysis session, leading a practical exercise and observing the performance of match officials.
Please contact the SDA for more information.