Read the book and submit your comments. Submit the code to the developers. If it's a simple change and its effect is obvious it will probably make it into the next release. Remember, this is open-source. Don't be bashful.
Software engineering is one where experience is more important than raw IQ power.
By contributing to open-source you help to teach newcomers. You contribute more because you are helping to spread knowledge. It's one thing to make a fire and cook a meal for a hungry person. It's another thing altogether to teach that person how to make a fire, how to cook, and encourage that person to teach others. Code, document, and teach.