Are you asking about a real estate license (realtor/agent) or a business license?

Quote from @Henry Jay: Hello, me to real estate and look for knowledge in flipping and rental properties. 

Consider joining real estate meetups, shadowing an experienced investor, or working as an intern to gain hands-on experience.

They all are if you ask them , its because they are getting your money .  

My income tax experience is primarily in tax resolution and real estate accounting.  

It's not fool proof but I've weeded out a lot of people this way without spending money for marketing. 

Value of time vs the value of money

Most "off market" properties are sent out to huge buyer lists of the most unsophisticated and inexperienced investors and those are the individuals you are beating out on term.Here are real examples of MLS properties I recently purchased:6370 Germantown Avenue: Four unit mix-use with one unit occupied.

2) Some folks prefer to only pay interest for the money they use - which is HELOC here.

The vast majority of your wealth gain in real estate will be by holding properties long term and the appreciation/principal paydown will slowly but surely help you become wealthy.For 90% plus of people out there who are looking to start, house hacking is the best way to go.