Use the Tax Withholding Estimator on the IRS web site to figure out what to put on your W-4 form. The W-4 form doesn't use allowances anymore, so you no longer "claim 0" or any other number of allowances. The new form works differently.
The 1040 has been generated. It's created as you enter your information, not just when you file. You can look at it by following the instructions in the FAQ that I referenced. Sorry I neglected to make it a link. I've fixed it now in my previous post, and here it is again.
How do I preview my TurboTax Online return before filing?
