Are there certain key features to keep my eye out for besides making the numbers work?

First floor is open concept featuring hardwood floors throughout.

It just is a desirable area or feature where a realtor is an extra cost.

@Kody Veit I love that you can chose your area code, I didn't know that was a feature. 

However, some states mandate changing locks every time.If you decide to switch, LandlordLocks.com is supposed to be the easiest route with some really nice features.

That means that not only does the house show well but it's got the normal features expected for its market; garage door opener, high efficiency HVAC, solar reflective window screens, attractive landscaping, good quality appliances and fixtures, nice decor touches.The best thing I ever did for keeping tenants longer was to require a minimum two year lease going in.

@Thad MortonRent Manager has a pretty solid maintenance feature.

Hello, I just learned about RE investing at the beginning of the month, attending a free RE seminar.

;-) This pays a whole lot more.5) What I wouldn't do is spend a lot of money going to seminars.

If you're really interested recommend you do the normal podcasts, books, seminars.