I actually just got Warioware DIY for the DS yesterday. I found it brand new at EB for $4. I had never played it before, so it was an offer I couldn't refuse.
I have only spent a few minutes with it so far. Any suggestions?
Skyward Sword is what Im currently playing. Im up to the Cistern. I never got this far when I played it at launch. I cant say I like it that much, TP on the Gamecube/Wii U is better. But Im determined to finish it this time.
I really like WarioWare DIY - it's fun to create your own mini-games, even though it's got some clearly definite limitations. Definitely go through the tutorials and you'll find a lot of neat little tricks. There are also plenty of YouTube videos showing off cool levels and even some extra fan-made tutorials.
Now that online is disabled, some content is no longer accessible which is a shame. There used to be a bunch of downloadable games you could get that were made by notable developers, and it was neat to see what they had created. There are a bunch of unlockable trophies in game that would open up some bonus content; I'm not sure if you can still get them without online connectivity?
Honestly, the biggest suggestions I would give are:
1. see if you can grab a second copy at $4, because I know there are trophies for sharing content and you can do local swapping (assuming you have a friend or extra DS unit available) to unlock them; if you aren't kind of OCD like me about unlocking stuff, this might not matter to you
2. after creating a few mini-games of your own, if you enjoy it then grab the WiiWare version so that you can transfer your games and play on the big screen; totally worthwhile if you want to share your creations with friends