I have to give an eight minute speach on the topic of skiing and the different types, like park racing bc... i understand its a broad topic soo i just want input on what major things, as fellow skiers what do you think i should include... im giving the speach to all none skiers too... sooo how would u break skiing up into categories, and what major things should i include in the categories... i really need help with backcountry because im from wisconsin...