I was looking through LoopNet.com for a multi-unit property, but like most listings online, it does not give all the figures for me to put in the BP rental property calculator.I was wondering how you guys find that information out in order to analyze the property, and find if it's a good deal.

that would take me weeks to analyze them all wouldnt it?

This is where knowing how to analyze a deal is vital.

I know the "The Millionaire Real Estate Investor" is one of the most popular books on REI.  

I just like analyzing the numbers and making sure it makes sense for me and my wife.

Brandon wrote the Ultimate Guide to Analyzing Rental Properties which might really help you.

Notes are listed on BP because notes are popular with those in RE, it drives posts which is BP's business, they are not in the financial advisory business.    

Analyze the local safety, political, and economic circumstances and get a feel of long term general (urban, industrial, infrastructural) development.

Duplexes were never a popular building style here, so there aren't that many to choose from, although there are some.  

(LLC's were popular at one point but have been proven to be less attractive and "out of fashion" so to speak.