We reviewed the scale of things in the Universe, starting with Earth, working our way through the other planets in the Solar System, going up in scale through the different types of stars, and ending up in the Hubble Deep Field where there are tens of thousands of galaxies, some nearly 13 billion light years away. This was to set the field for studying the basic 'building blocks' of the Universe, i.e. galaxies. We looked at the 'Hubble Tuning Fork' classification of galaxies, and discussed where the Milky Way fits into this classification.