In order to memorise any material you must first encode it. This is the first stage of memory. Encoding means processing the material, that is, 'taking in' the sound, sight and meaning of the material. The second stage is storing the material. Initially, the information is held in short term memory, but this only lasts for 30 seconds. If you write down, repeat aloud, or act in some such way upon the material you are enabling the material to be stored more certainly.
The last stage of memory so that the material enterslong term storage, what we refer to as long term memory, is retrieval. The act of deliberately recalling an item, activates neuronal transmission/ Basically, we experience a stimulus, we make sense of it, we recall it. Encoding, storage, retrieval. It is important to understand these stages if we want to aid our memorisation and ensure that material enters long term memory.