My mother does the books and I manage the rental contracts and do some of the repairs or meet with contractors.How should we classify the income from each property and file taxes?

Check with local charities and direct your tenants there as wellCheck with your bank about making interest only payments.See if they have filed a tax return and are getting a refund.

When a CPA does your taxes, are they willing to sit down with you and explain all the intricacies they did, or do they charge you 100-300/hr on top of the filing fees to explain?

One of the recent turnovers I had 58 separate showings in 60 days (slower market) and ended up only meeting the approved tenant after they had already filed out their application, paid first month/security, and moved in. 

For example, suppose a CA resident formed a disregarded FL LLC back in 2015 to hold an investment property there, and was unaware of the CA filing requirement.

In the book, it discusses starting out establishing a corporation for yourself, as a corporation is nothing more than a file in a desk, but the benefits and tax savings can be massive.I have heard a lot of debate between deciding between an LLC vs simply insurance, but are there really benefits to starting a corporation for yourself, or is this part of the book a bit dated?

Check your state's unemployment website, PA is allowing filing nowhttps://www.uc.pa.gov/Pages/co...

I have friends previously working low paying hourly jobs already trying to file for unemployment because they won't be able to pay their bills on April 1st.

Since then, the file has passed back & forth to a Crystal Monteagudo (”Loan Processor”) with a series of document requests which seems unending.

LLC can be taxed as a corporation if you have filed Form 8832 for the LLC, if that is the case, the LLC will be paying the taxes due and probably at a lower rate (but watch out for double taxation once at the LLC level and another at the personal level), that's my understanding, again best to speak to a good tax accountant or tax lawyer before making a decision.