I cant download adobe flash player on my dsi

Hello,
i have recently got a dsi for christmas and i went to youtube it said i needed to download adobe flash player so i went to the site and clicked my server thing then i clicked continue and it like wouldnt let me click continue and i know that dsi can have adobe because you need it for email so if anyone can give me some advice i would really really like it and if you can watch youtube you should look up cartoon bear tries to ride treadmill its funny hope you lol