There are parents/sisters/friend/grand children, total 6 adults 4 children. 

That being said, I recently purchased a duplex that I was able to negotiate a deal on for a grand total of $100,000.

I have already checked with the city, and there isn't a process for checking the readings online or anything, so my only option would be to drop by the property and look at the meter myself.

Okay here it Is -300k was an appraisal done as-isThe rental amounts in this area for a 4b3b is going for 2500Looking to buy out his siblings with a total of 250k, 4 in all. 

Any feedback on online classes vs. in person?

If you were capable of raising a total of $2.6 million in capital, why not purchase a high cash flowing property somewhere else in the United States for $2 million, with an ARV value of $4 million, and spend $600,000 on improvements.

With this 4 units i will be having 6 in total.

need to look online ,search REIA groups or go on meet up.com ,home owners association ,HOA association   and if there is no group , start one 

Has anyone seen success from online advertising, or do  physical yellow letters increase the perceived legitimacy of one's investing operation to a prospective buyer?

As long and the total assessment for a tax base and the tax rates generate the desired amount of income, the assessor doesn't care too much about individual values.