You can look at it for however you want as long as it's under 2 min.

Just to be clear. You got it mixed up.
Trap dustshoot is speed one, D.D. Crow is spell speed 2.

So, you can make a chain with dd crown with 4 cards in your hand?

Yes. If you have 4 cards in your hand (including a "D.D. Crow"), and your opponent activates "Trap Dustshoot", you CAN chain the effect of "D.D. Crow". They are both spell speed 2 (which makes "D.D. Crow" a great card in my opinion), so they can be activated at ALMOST anytime and be chained to any spell speed 1 or spell speed 2 effects.

HOWEVER! If you do the exact scenario mentioned above (chain "D.D. Crow" to a "Trap Dustshoot" while you only have 4 cards in your hand), the effect of "Trap Dustshoot" STILL RESOLVES AS NORMAL! So basically, the only reason to do it would to remove a card in your opponent's graveyard you feel they would need soon, or to limit your opponent's choices. But if "D.D. Crow" was the only monster in your hand, then it's a great move because you kept all your cards and removed one of your opponent's cards. Sadly, they still get to peek. (And yes, for however long they want as long as you feel it isn't stalling)

There's more on "D.D. Crow" and it's limitations, but I hope you can figure that out yourself... Don't want this post to get TOO long...

That's the people you want, or that's the POST you want? Seriously, don't want to be mean about it an all, but your English is very difficult to understand. I understand since it's the world wide web (you might live in a country that doesn't speak English as a first language), but it's bloody hard to read!

And if I'm the noob, why is it that I know how to use my cards right?

You cannot make notes during the resolution of a chain. You must look, remember, finish everything and then write it all down.

TH