Intro+Organic+Help

How alkenes and alkynes differ from alkanes http://www.youtube.com/watch?v=7XbYhjyUI-M&feature=youtube alkenes and alkynes http://www.youtube.com/watch?v=Rf7wGtdWsEE&feature=youtube_gdata_player benzene rings and alkenes @http://www.youtube.com/watch?v=gxgl5iG3R2o&feature=youtube_gdata_player cis and trans isomers @http://www.youtube.com/watch?v=ZUtBy4KfMFg&feature=youtube_gdata_player Benzene and other aromatics http://www.youtube.com/watch?v=A5r7wkwDID4&feature=youtube_gdata_player Naming Aromatics http://www.youtube.com/watch?v=3Hko9dpGkeQ&feature=youtube_gdata_player Aromatics http://www.youtube.com/watch?v=8gW7H0ReN5g&feature=youtube_gdata_player