Cool! Welcome to the site and we hope that you will enjoy your stay. Ask lots of questions, there are a lot of experienced people registered on this site to help you out with whatever you need and remember, there is no such thing as a dumb question.
Be sure to read the articles on this site. Many have valuable information required to be not only successful but also to really enjoy what you are doing by making this so 'complex' hobby easier to understand and love.
What kind of tanks and fish do you have? How old is your son?
Welcome aboard!
miley*