This thread may be useful: Nearing 1,000 College Students: Here's What I've Learned Opinions and experiences vary in student rentals but, at scale, mine is this: College students are great for cash flow but the landlord will certainly earn it. 

I am one of three boys raised by a single mother who works 16-20 hours a day in 2-3 different hospitals varying on the day of the week.

Cash-on-Cash I think will vary greatly from investor to investor in terms of what a good return is, the cap rate shouldn't have as much variance I wouldn't think.

These can vary in terms of length.  

Real estate law does change from one state to the next, so your jurisdiction may vary.

@Kevin CrossObviously you're going to get varying answers to this question, but from what I have seen, many flippers do not have a W2 job.

The answer will vary for each person, depending on priorities. 

The skill set needed is varied including real estate market knowledge, but also construction / maintenance experience.Anyway, for smaller investors (under 20 units), being a Realtor makes sense. 

Rates and fees vary greatly between lenders. 

Excellent, excellent varying views!