For those of you who have signed up:
What do you have to enter when you sign up? I heard you have to fill out some tax form? Now, what if you make less than $600 by the end of the year, do you still have to fill another tax form out or whatever in April?

I'm only 18 and not too knowledgeable on tax info. Thanks

I think you should refer this; https://www.google.com/adsense/taxinfo

I think depending on the country you are in, the info varies

I am from Australia, and I had to enter my taxfile number when signing up in order to get my payments approved.