The periodic table stands for the building blocks of everything, set out in order. It is read as a wish to understand what your life is made of and how its parts combine.
Has this come up in your dreams before? What was going on in your life then?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.