Googlemap the neighborhood and see how many pools there are in that area, probably pretty common in your demographic area (4BR in Morris County).

You could have windows to replace, roof, siding, sidewalks, underground utilities, dead tree removal or trees to tall or close to buildings, parking lot replacement or repair, amenities to add or replace, etc.

Specifically, for me as an investor, if I were NOT licensed there are some smaller multis (2-3 units, the most common type we've got) that have exemptions for protected classes in certain cases, but as an agent you waive all exemptions.Obviously this isn't a big concern, but I've seen it trip people up and it's a hassle if you forget.Good luck!

The smell fades over time but getting the residue off the walls exponentially speeds up the process.Fires aren't that common, and I have had little experience with them.

@Jessica Wood If the tenant hasn't paid rent AND utilities that tenant is supposed to pay are cutoff then the property is considered abandoned as per our lease. 

Kitchen fires are very common.

Utilize the knowledge of those seasoned landlords who have already made mistakes and learned from them.

Making 63k and paying 6k in rent allowed me to save and travel extensively (Went to to Egypt, Australia, etc.). 18 months after graduating from Berkeley, I bought my 5/3 house in DC suburbs - Virginia and I was making $70k+ and collecting $2600 rent to pay 2000 rent (1500 piti on 255k house) and utilities.

The appraisal was done utilizing three comps, 2 in my condo development, and one in a condo complex close by.

Another common term you can use to search for information on is "house hack".