Bioinformatics is the design, construction and use of software tools to generate, store, annotate and analyse data and information relating to Molecular Biology. Many people, like me, come into this field of study without a background in biological sciences, thus require at least some knowledge of biology to better make sense of the literature.
The good news is you don't need a degree program worth of knowledge to get started. You can get started with just a few key pieces of information and learn more as you grow and go deeper.