I was wondering if there are any programs that any of you recommend to becoming a better real estate agent, especially with studying and learning the laws and regulations for the test.

 @Eric CarlstromRegarding taxes, be sure you are not paying too much and that your CPA/tax professional is up-to-date on the regulations.

Those alternatives don't exist today (generally) so you should be fine just saying its financed. 

Does anyone know if the mobile homes we purchased existed?  

I do not think they are sketchy is just that they do not go by all of the state regulations and they might charge you a cancellation fee or increase rates more often.

So in your example, buying a trackhoe might grow your business or create greater profit by eliminating some outside costs, or letting you take on bigger projects, or speeding up existing projects, etc (just an example).

By-right uses are much simpler since they don’t require additional government approval beyond standard permits.Development Standards: Once zoning is clear, factor in the regulations such as setbacks, parking requirements, density, and other local standards.

Ideally, I’m looking for areas with a mix of:High occupancy rates for STRs (Airbnb or VRBO),Solid potential for appreciation over the long term,Investor-friendly regulations on short-term rentals.If anyone has experience with markets that fit these criteria or knows areas where STR is thriving with good investor laws, I’d love to hear your thoughts.

This tells me two things: Obtaining a variance will be more difficult because there are already policy considerations in place intended to reduce density & (2) There is clearly an over supply of rental units in this area otherwise the overlay would not exist. 

I do mean 'Millionaire' not multifamily, but wish that one existed!