You definitely can't just buy a building low down, do no work to it and keep old rents and expect to profit. 

Make sure the previous property management company did their job and communicated a change in management prior to you taking over--along with your contact information.If they have no done this, they should so the tenant doesn't feel like a scam may be going on.Just make sure they're away of where rent payments need to go and who they can contact in the future. 

I've asked my clients a similar question and have developed tools for them to minimize this, but I find there are a few different types of clients.Manager managed - these folks have no issues as they simply upload their year end statement from their property manager, their 1098 mortgage statement and any other one-off expenses they may have paid for outside of the management company. 

No improvements have been made, but nothing has deteriorated either.

I've trained people at my jobs when I was a senior accountant to controller.I've used Yardi Enterprise (old desktop client software)Yardi Voyager 6s & 7sYardi Genesis2Reason why I say you won't be able to find a tutor is because no one is going to spend $15K a year to use as a training platform to mentor and tutor people.

Have a decent rental history, including no past evictions.5.

None of these things will bring success tomorrow, but with doing them consistently every day, I will wake up in 5,10,20,30,40,60 years and be miles ahead of everyone else.2) Never stop learningThere is only growth or decay, there is no middle ground.

I work with two other PMs in North Florida and in Austin, TX and I have to say there is no comparison.  

No problems with rust but do have to deal with hard water; they have a chemical treatment called a pillow that takes care of that.

What do you do to ensure that the tenant is responsible for security deposit disputes since that is the largest reason for owner lawsuitsHow familiar are you with the newly changed laws that can affect you the owner if they are not used correctly?