If short and not substantially similar to "the Grinch" and with the play not to be sold to others and thus become a business then probably little...

You should see IP Counsel before doing you own legal work.

Can i make an audio recording of similar info to a book I've written with a noncompete clause?

The author cannot prevent anyone from writing a book with the same subject and focus - ideas are not protected by copyright. The author can bind...

Can I use nikes wrestling logo on a custom shirt ?

Yes with a license from Nike. Without a license(permission) from Nike expect a demand. See IP Counsel.

What does this document mean for emulation https://www.copyright.gov/1201/docs/fedreg-notice-final.pdf?

Not knowing where the link goes i think of copyright and patent. Emulation will produce a similar result using a different software or structure. ...

Is the title of my book infringing on the Banged Up Abroad series?

Titles and short phrases are not protected by copyright. See IP Counsel.

How can my class "business" legally use a song in a homemade music video?

Your class project has no "Fair Use" defense. Your use is not teaching. However, the class itself may be teaching and there may be a case that...

What can i do if some has my entire content on their website under a domain previously owned by me?

Check cybersquatting. Was there a sale? How did the site itself become controlled by someone else? See IP Counsel.

Can I have/get the patent of any Social Media "feature"?

KSA was not a member of PCT 10 years ago and many not be a member now. Filings may be required in every country of interest. Public disclosure...

Someone from Australia offered me $500 to buy my Facebook URL. Is this enough and common?

You can counter with a higher offer and then find out if you want to high. It they take it then you didn't counter high enough.