If I have already entered home office and vehicle expenses under (Self-Employed) Business, should I answer "No" when these questions come up under Personal? [Tax Year 2018]

Yes, you would only enter it in the Personal section if you also had unreimbursed employee expenses from a job that paid you with a W-2.

 cant get into turbotax   type my email and password and takes me back to it again

Your userID most likely is not your email address ... and it really should not be....

Try these steps to recover your User ID or password:

1. Go to our account recovery page.
2. Enter one of the following:
   • Phone number (recommended)
   • Email address
   • User ID
3. Follow the on-screen instructions.

Once you’re done, we’ll either send you a code to help you recover your account, or show/send you a list of accounts associated with your info.

• If you’re still unable to recover your account, select Try something else on the Account Recovery page. We’ll ask additional questions to verify your identity.

Keep in mind: Once you’re back in your account, make sure to include or update your phone number. Doing so helps increase account security and ease account recovery.

(If you're looking to access a prior year return, go here.)

Related Information:

• I forgot my password in the TurboTax CD/Download software
• How do I update my TurboTax account information?
• Forgot your TurboTax Advantage login?
• I forgot my password in the TurboTax Mobile App
• How do I access my prior year (2017) return?

I need to download stock market tax information by brokerage and accounts

No

e-mail  =  [email address removed]

This late in the year the broker or funds might have taken down the special import files.  You need to ask them if your 1099 is still available.  Just because you can download the 1099 pdf they might not have the import files anymore.  So you might need to manually enter it.