But nowadays, it often seems that's all there is in the way of new blood in the field.

You're getting ready to take on the challenging field of real estate development, which is brave of you, my friend!

I am in the medical field and want to dip my hands into real estate.  

And, if you want to really see how LPs feel in a non public environment, there’s an “LP only” forum on Left Field Investors that discussed “red flag” sponsors that investors won’t work with again. 

Just curious if anyone has any experience getting into real estate investing via becoming a home inspector and kind of grasping the field.

This entails building personal/working relationships with people successful in the field.

., the roofers, the fireplace repair crew, and the carpet installers), there were numerous instances when Bildwise and its subcontractors did not complete tasks in a workmanlike manner.

If you're up to the task, listing on Zillow or Redfin will be your best bet.There are numerous studies that show listing on the MLS will not only get you more net proceeds but also eliminate the liability from you as the owner by using a third party to sell the property.

Can anyone recommend a third party phone/answering service that can field and respond to maintenance requests from tenants?

In Denver, that's any of the numerous areas that has bars and restaurants and shops nearby.