The following titles offer an accessible introduction to Jung’s works and the development of his ideas:
Jung, C. G. (1963/1995). Memories, dreams, reflections, London: Fontana Press/HarperCollins. This is Jung’s autobiography, a very insightful reading and accessible to all.
Jung, C.G. (1964) (ed.). Man and his symbols. Dell Publishing. This edited book was compiled specifically to present the core ideas of Analytical Psychology in a mainstream way. Some chapters address more complex dimensions of the psyche, but a good resource for those who want to read further, and are already familiar with basic Jungian concepts.
Hopcke, R.H. (1999). A guided tour of the collected works of C.G. Jung. Boston, MA: Shambhala.This is a useful roadmap for those seeking to explore a specific aspect or theme in Jungian psychology. The book offers a brief summary of the topic before suggesting readings from the Collected Works.
Hall, C.S. and Nordby, V.J. (1973). A primer of Jungian psychology. New York, NY: Meridian. One of a few introductory books offering an honest (if condensed) overview of basic principles of Jungian psychology.
Stevens, A. (1994). Jung: A very short introduction. Oxford: Oxford University Press. Written by a well-known Jungian analyst and writer, it locates Jung’s works in the context of his life.
Goss, P. (2015). Jung: A complete introduction. London: Hodder & Stoughton. A recently published, fairly comprehensive and deliberately didactic introduction to the fundamentals of Analytical Psychology, as well a reflection on contemporary developments in the field and other disciplines.
Johnson, R.A. (1986). Inner work. New York, NY: HarperOne/HarperCollins. A wonderful book for those who want some advice on how to approach the psyche; it discusses active imagination and dreamwork.