See the answers provided by Jeff Dowler CRS and Gary Coles (International Referrals).

You got your answer from Gary on FIRPTA.

The TDS is a required seller disclosure (with some exceptions) for the seller to share information about the property for the buyer

Foreign Investment in Real Property Tax Act of 1980 (FIRPTA) is a law which makes certain that the IRS can collect taxes if the Seller is a foreign national.  The disclosure is designed to protect the parties involved in the transfer.  If the taxes are not withheld and the Seller does not pay, the IRS has the ability to collect from the Buyer or anyone else involved in the transfer  -  maybe even the real estate agents involved

This is what your broker, or mentor, or teacher for. If you are member of C.A.R. they have all tutorials in zipforms you need for EVERY form. 

Hopefully you'll get a better mentor or broker...SOON! Best wishes!

Jeff and Gary have your answers.  The TDS (pronounced "tedious") is required almost every time (I'm in one right now where the seller is exempt, first time I can recall seeing that).

Now the AVID, that is NOT required.  Don't let anyone fool you.  It increases your liability and I am trying to get it removed.

Michael Jacobs has the perfect answer for you.

parked and reading

Call a Real estate  attorney .

Looks like you got some good answers, Eugene. There is a good reason agents earn substatial commissions when there is a sale. One reason is real estate is often very complicated and it must be done right. The cost to the seller or buyer who makes a big mistake can be devastating.

Go to www.nolo.com and buy this book: http://www.nolo.com/products/for-sale-by-owner-in-california-fsbo.html

Eugene y - you got a few good answers....

(And working with a mentor does help.)

 contact your title company for reasons.

The disclosure helps along the material fact process.

A check box on the form notifies the all parties of tax due. Escrow acts on it

FIRPTA affidavit is usually done at closing here