I love the act of decoding symbols for my own enjoyment! 
which symbols do you decode?
English alphabets. Since I enjoy reading as a a means of language acquisition, communication, and of sharing information and ideas.
So where did symbols originate from?
Different places, but mainly through the complex interaction between the text and the reader 
ok, so can you read other symbols outside English Alphabets?
yes of course, there are computer symbols as well and multimodality, which is a theory of communication and social semiotic
what are computer symbols?