Here's the hints from the official thread on their forums so these aren't cheating:
Hints:
* Step1: N/A
* Step2: Use a calculator

* Step3: The answer is not something you post. It's something you find. It's also on the front page of the forums!
* Step4: You won't be using any math here.
* Step5: N/A
* Step6: N/A
* Step7:
http://www.wolframalpha.com/
* Step8: If it's challenging, just start from the beginning.
* Step9: Something's hiding behind Rajiv.
* Step10: N/A
* Step11: If your homepage isn't set to
http://www.dropbox.com ..., why not?

* Step12: N/A
* Step13: This answer is also on the forums.
* Step14: N/A
* Step15: What kind of Asian cuisines are out there?
* Step16: N/A
* Step17: Using thesaurus.com is all based off 'witch' synonym you decide to use.
* Step18: Take a classical approach to this one.
* Step19: Sometimes letters aren't just letters.
* Step20: N/A
* Step21: Dropbox to the rescue!
* Step22: Head to the designated spot for Dropbox feature requests
* Step23: If the Dropbox Team is watching you, it's probably not a bad idea to learn About Us
* Step24: N/A
* Step25: video game reference!
* Step26: N/A
* Step27: Make sure to take 'notes'! Having a piano nearby might be helpful too.
* Step28: Seems like most people got stumped on this one... birds of a feather flock together, I guess.
* Step29: Go back from the start if you have to!
* Step30: You're awesome!