What form do i file for my new business single member llc for tax entity

A single member LLC that has Not incorporated to a S corporation is a disregarded entity and files a Schedule C which is included with your personal tax return Form 1040.

What questions do you have concerning your self-employment income and expenses?

I think you may referring to form 2553 which you can file to elect your LLC to be treated as a S-corp. 

This form must be filed within 2 months and 15 days after the beginning of the tax year the election is to take effect, or at any time during the tax year preceding the tax year it is to take effect.

Form 2553 is not supported by TurboTax.

You have to download a copy HERE and the instructions are HERE.