So the places we all encounter that don't even have a wheelchair ramp at the entrance (at the appropriate incline, etc), even though it would be relatively easy to put in, aren't compliant (envision a storefront set back 10 feet from the sidewalk).

You would still save more money 9 out of 10 times living with your parents but being able to leverage a low down payment loan will allow you to get a very high ROI on relatively safe investment. 

These tend to have less management headache but still have strong returns and tax benefits. 

“Depreciation” is a wonderful tax benefit over the course of 27.5 years, but unfortunately, it isn’t a tax break per se, merely a deferment. 

Are there benefits of joining a specific brokerage or are they all about the same?

But then you have the benefits of using it yourself, plus you'll build equity if you choose the right property.

Quote from @Scott Trench: On a related note: I am looking for someone who meets the following: - Is an up and coming investor without a large current portfolio. - Has accumulated tens or hundreds of thousands of dollars- Has a thesis to purchase extremely distressed office buildings in urban locations, get them re-occupied, self-manage and work in and on the buildings to get them re-rented, preferably Denver.

Relating to services.

You need to do a cost-benefit analysis to determine if it's worth it.  

I can help with the financing portion, but I would love to help connect you with an outstanding relator in the area.