For 2017, Gordon B. Hinckley (1910-2008) will be the president of the Chruch who will be the focus of the "Teachings of the Presidents of the Church" manual series for Priesthood/Relief Society. To get a better understanding of the life and teachings of Gordon B. Hinckley, see, for example:
Sheri L. Dew, Go Forward with Faith: The Biography of Gordon B. Hinckley
Gordon B. Hinckley, What of the Mormons?
Idem. Standing For Something: 10 Neglected Virtues that will heal our hearts and homes
Teachings of Gordon B. Hinckley
Discourses of President Gordon B. Hinckley, vol. 1: 1995-1999
Discourses of President Gordon B. Hinckley, vol. 2: 2000-2004
Sheri L. Dew, Go Forward with Faith: The Biography of Gordon B. Hinckley
Gordon B. Hinckley, What of the Mormons?
Idem. Standing For Something: 10 Neglected Virtues that will heal our hearts and homes
Teachings of Gordon B. Hinckley
Discourses of President Gordon B. Hinckley, vol. 1: 1995-1999
Discourses of President Gordon B. Hinckley, vol. 2: 2000-2004