Correct me if I am wrong, but my understanding of this is is that if the owner doesn't allow me to view the inside of the property, I can make an offer, noting Offer Subject of Interior Inspection.  

But checking the inside from a window one could also probably view the trash. 

You can also do this online in some counties, although some charge for online searches or document viewing.

She schedules viewings of the houses based on my schedule and if I have to make a stop at the house for a viewing, we make it an open house, send out an email blast to everyone that has ever signed up on our site, and update the zillow listing with the open house info.

This captivating 2 bedroom 1.5 bathroom Apt (Converted bedroom to a 2 bedroom apt.) includes a large master suite with a huge walk in closet, large bedroom floor layout, and tile floors throughout located in the gated community of Coral Gate East Condo with pool and playground views from the screened balcony.

Also from the partnership point of view especially for a long-term ahead, I want to make smart decisions now so I don't regret later:))I would appreciate your input on cons and pros - I need to decide quickly which is the proper way to go!

You want to view the sale of the duplex as literally two sales as far as the accounting is handled.  

Track all of the expenses and income on your projects in report form that you can view regularly with other people you trust to help reducing your expenses and increase your income.  

I have a couple of general newbie questions I was hoping someone could help with:When viewing duplex listings on sites like Zillow, some of the listings are obviously tenantless, as the pictures show bare rooms with no furniture, but some listings show fully-furnished rooms.  

Because I own businesses in other fields its great to wall off the software by company from the employees view but from my vantage point it's one system that reaches people in all parts of the organization, allows us all to work together on projects and enhances inter office communications.