Watch a couple of the videos or read some blogs on BP and then practice a few times.

If  not using an agent then a real estate attorney is a good idea especially in the beginning, they can draft your PSA based on you LOI or your specific needs, they also should have a good understanding of what the standard practices in your area are and what needs to be in the contract in you locality.  

Thanks for the response and I will make sure to always practice good credit habits.  

I had been practicing the 'live-in home flipping' strategy with my previous two homes, but now due to life circumstances and temporary status in this location we are renting. 

I'm not sure if you're only looking for in-person @Byron Broughten, but the BP real estate podcast recently has had a couple of tax people on with their own practices.

When all these ridiculous SEO "experts" will tell you to go check keyword volume and keyword this and that...

I always thought (maybe incorrectly) that if you're sued, the opposing side will be after your real estate, not your cash, unless you have a real high pile of cash.Finally, from a practical angle, I'm unsure how you would use two operational accounts (one per unit) for each property when most of the expenses for a duplex are shared.

Are there best practices in dealing with them?

If you want to be practical, you just deduct it.

There was an opportunity to get a turnkey property and the numbers would of worked but I didn't feel like i was getting a good deal as there was practically no negotiation it was a take it or leave it situation at THERE PRICE!