[Tutor] python challenges

[D. Hartley]

Ok, I hate to ask another question about this riddle. But I have
looked and looked and looked.

Where can I find more information on 'banner'? Everywhere I look it
starts telling me about banner ads and so on, and that is not what I
want!

Any howto's/tutorials/simple explanations would be appreciated!

Thanks :)

~Denise (bound and determined to solve this riddle)