The lds on here keep dismissing the content of the lds teaching manuals as "not doctrine". The same with other "non-doctrinal" sources that Phoebe and others have posted.
If you are going to hide behind the curtain of "it's not doctrine", then your church must be guilty of teaching and/or endorsing false doctrine by supplying the content on its official website and official teaching manuals.
On this page of the lds official website, it states:
The First Presidency and Quorum of the Twelve Apostles approved these books as a library of teachings from the prophets of our dispensation for each Latter-day Saint home. They are a valuable resource for individuals and families seeking to learn, live, and teach the restored gospel of Jesus Christ.
Teachings of Presidents of the Church
This is a collection of teachings from all of the lds presidents. If there are teachings in any of these documents that are not found in the lds 4 standard works, then, by using the lds "it's not doctrine" curtain, the lds church is teaching and promoting false doctrine.