True, converting a personal Schedule E to a partnership will indeed reduce your IRS audit chances, statistically speaking.

Then, each person with money in the deal would get an 8% preferred dividend until they get all of their money back.

If you have a chunk of money to get going I'd personally buy the biggest thing you can if you don't I think house hacking into a 4 plex is great. 

That depends on a lot of personal factors such as your finances.

I've sold over 80 homes personally in the last 30 months and I'm usually within $5k of the appraisal report when I run my CMA for clients.

During the slow season, do you personally focus on getting more rentals, focus more on family/personal life, or do you do something else?

I am here to learn more about my own personal investments as well as seeking out learning opportunities from like-minded individuals.

There's a common belief that your tax person should also be an investor themselves.

The units are ready, but due a personal situation I only want one.

I've been informed that completing the course alone may not be sufficient to pass the exam, so I’m seeking advice on how to prepare effectively once I complete it.Currently, my only other resources include a YouTube video, five practice exams, and a textbook.If you have any additional suggestions—whether online or in-person, paid or free—that could help me effectively prepare for the exam, I would greatly appreciate them.