I find myself doing a lot of freelance jobs programming and designing websites and web applications. I get paid pretty well, but eventually I feel as if I should be paying taxes, I'm not sure if i'll get in trouble for the taxes that I haven't already paid or what not.

What are the details and will my parents find out what i'm doing? They dont' approve of me having a job, but would rather have me study full-time, but I find I have a lot of spare time to do this sort of work.

Anyone?