LDS.org: General Conference Talks about "Satan"
LDS.org: Resources on the Gospel Topic on "Satan"
LDS.org: The Guide to the Scriptures on the topic of the "Devil"
LDS.org: Top Search Results on the topic of the "Devil / Satan"
BYU: Encyclopedia of Mormonism on the topic of "Devils / Satan"
BYU: Encyclopedia of Mormonism on the topic of "Satanism"
"Have No Regrets" - Richard G. Scott - (excerpt from BYU fireside)
If I Were the Prince of Darkness
Satan's Plan of Attack
The Devil's Convention
The Snake Story
Tragedy at Rayad (excellent teaching story and parable shared by Ardeth G. Kapp)
Two Opposing Influences (excerpt from BYU CES Fireside by Pres. Boyd K. Packer
Quotes on Satan
Quotes (LDS Daily WOOL)
"O That Cunning Plan of the Evil One" - M. Russell Ballard - Oct. 2010
"Power over Satan" - ElRay L. Christianson - Oct. 1974
"Satan--The Great Deceiver" - Marion G. Romney - April 1971
"Thou Mayest Choose for Thyself" - N. Eldon Tanner - April 1973 (very good)
James E. Faust, "The Great Imitator" - James E. Faust - Oct. 1987
"A Banquet of Consequences: The Cumulative Results of All Choices" - Quentin L. Cook - Feb. 7, 2017
"Our Strengths can become our Downfall" - Dallin H. Oaks
"Resisting the Sirens’ Voices" - President Eric B. Shumway - January 10, 2002 - BYU-Hawaii
"The Armour of Light" - Dennis L. Largey
"The Screwtape Letters" - C. S. Lewis