There are many good websites out there on the topic of QBasic. This is a list of the best sites:
Petes QBasic Site: This site is mostly aimed at people thinking about programming video games in QBasic.
The QBasic Page: This is a good site for getting source codes and programs for QBasic.
QBasic News: The most recent and up to date news on the QBasic community.
QBasic Programming for Kids: A good site for young people to start programming.