We use Quickbooks Online and took a class with our CPA to learn the basics - Well worth it! 

It might be work just looking for deal analysis practice to see if you get closer to a number that works.

It is case-by-case.If it is portfolio income, it is reported on Line 5 of your partnership's K1, and there is no self-employment tax. 

I'm a college student, and I plan to start investing in multifamily homes once I graduate, and I recently started looking at deals on Zillow just so i can practice underwriting.

My 3BR rents range from $1,425 to $2,000 which shows why it is almost impossible to give you meaningful rent data without you being more specific.At this point, I wouldn't discount the online systems such as Zillow so much.

Check out other online guides available here: https://www.biggerpockets.com/guides3.

Recommendations for career transition include speaking to agents, exploring brokerage firms, taking classes, and using resources like books, podcasts, online communities, and mentorship.Good luck!

Setting standards just to deny people is BAD practice, BAD business, and ILLEGAL.

You can do it online in every state in less than 10 minutes for almost nothing.

I am also becoming an agent soon and it is an illegal practice of law to draft a lease agreement as an agent and one could loose their license.