George Albert Smith Chapter 15: Advancing the Work of the Lord
"To Learn, To Do, To Be" by President Thomas S. Monson (Prophet and President)- The Gospel is true, let us follow it and be what we need to be.
"No Less Serviceable" by President Howard W. Hunter (President of the 12 Apostles at the time)- Serve and grow faithfully and quietly.
"O Be Wise" by Elder M. Russell Ballard (Quorum of the 12 Apostles)- Focus on simple ways you can serve improving your life and others.
Mormon.org- Be a missionary now and help advance the work by completing your profile and answering questions.
Sharing the Gospel Online- Things you can do online to help the church become more recognized.
From 2012 General Conference (so make sure you aren't stepping on someone else's toes!):
"Willing and Worthy to Serve" by President Thomas S. Monson (Prophet and President)- Do your duty.
"In Tune with the Music of Faith" by Elder Quentin L. Cook- Let us awaken and great a greater desire to claim the joy of eternal life.