When you visit an early childhood classroom, you should notice lots of print - posters, pictures, lists, poems, songs, labels, etc. Even though the children who are attending class in these rooms may not be able to read these words yet, it is important for them to start attaching meaning to groups of letters and to start beginning to "value" reading. You can do some of this at home, too!
Some parents set up labels in a room or two of their homes (some even try bi-lingual labels!) Having children help with this is fun, too! Have them identify things they want to know and create the words to name them.