DS Homebrew?

Thinking about getting DS linux, but I have no idea which storage device I should get, any recommendations?

When you get it you won't know what to do with it. You'll notice the little card and think 'bingo!' and put it in your DS. Then nothing'll happen. Then, you try looking up game programming on the internet and realise how boring and complicated it all look's, and how you'd even get it on your DS in the first place.