You’ll find that this forum and the people who frequent it will be a never ending source of info. to speak to your question of where to begin, depends on where you want to go. 

Best source (in markets that have no rent control) is either a realtor that deals with investors or a property manager.  

The storage unit next to the garage will also get a face lift and be turned into a workshop/studio to provide a third source of income from the property.

Multiple income sources in a single purchase.

Like most investors I believe cash flow is a critical component of an investment.

I have scouted several possibilities but wanted some advice on how to source a duplex in this area. 

It can be exhausting trying to get this information yourself via the internet when so many "sources of information" offer conflicting reports or just blatantly try to push you through some sales funnel without bothering (or caring) to address your actual concerns. 

It often took several days for the home warranty company to get a contractor out to the home, even if the repair was for a critical system (e.g.

The most critical piece of legislation narrowing the scope of acceptable telemarketing practices came with the TCPA of 1991, which amended the original Communications Act of 1934.Unless recipients had given prior consent, as of 1991, companies wishing to employ mass texting or calling had to heed the following restrictions:● Calling before 8:00 a.m. and after 9:00 p.m.

Then you will have an the square footage you need, and a floor plan to use as disclosure of source.