I have no idea where to start, as there are so many resources online.Any other ideas that are beginner friendly are welcomed too. 

Again, the BiggerPockets store has some books on this topic, or you can learn about it by watching podcasts, reading blogs, and interacting on the forum.

.: We've gotten off topic a bit but now I'm unclear on who is correct about Additional Insured vs.

[Topic of a future post]Why?

Not everybody can: https://www.biggerpockets.com/forums/51/topics/1075919-five-...Also, cost segregation will not help you with your CA state taxes, only (potentially) with your Federal (IRS) taxes.

here is what you DON'T want to do:https://www.biggerpockets.com/forums/963/topics/1195280-expe...https://www.biggerpockets.com/forums/48/topics/1160450-run-i...https://www.biggerpockets.com/forums/48/topics/1137397-balti...https://www.biggerpockets.com/forums/52/topics/1010977-12-00...so, forgetting the numbers / purchase price etc. for a second - are you mitigating the risks that got those investors in trouble? 

So more Roth for way less in taxable income incurred. doing this is easiest in a Solo 401k if you qualify but can also be done using a checkbook IRA as well. check out this post that @Dmitriy Fomichenko made explaining this concept.https://www.biggerpockets.com/forums/51/topics/1223601-how-t... 

Search a little..https://www.biggerpockets.com/forums/70/topics/291046-ppr-note-fund

Detailed answer:https://www.biggerpockets.com/forums/51/topics/1136752-expla... 

You might need to file 1099s if you used contractors or other people whom you paid for labor:https://www.biggerpockets.com/forums/51/topics/1167632-expla...