Here are some guides to debating in general, to specific styles of Debate, and sample videos of debates by university students.
Guide to MSDA Debate This site has a summary of what to do in a parliamentary debate in Manitoba. Most of the tournaments in Manitoba are parliamentary debates, unless otherwise specified.
Guide to BP (British Parliamentary) Debate. This is a sale of debate involving 2 two-person teams, often from different schools, on each side, so there are 4 teams in total in the debate. It is common at university tournaments and a number of the tournaments before winter break.
Introductory Student Guide to Debate This site has an introduction to Debating in general, organized around 10 questions
Debatabase This site has arguments on a long list of topics
An Introductory Guide to Canadian University Debating This guide is has good ideas for university style debates, and many of them are also useful for debating in general.