If you want to start with professional flying, why don't you post the question in the Certified Pilots section? Lots of friendly pros there who can answer any question you might have with regards to commercial use of drones and getting certified.
Take a look at that section, I'm sure you will find a lot of answers already in the various topics.
And try to be specific. There are countless topics possible on the subject.
FAA completes landmark rules for commercial drones
WASHINGTON – New drone rules from the Federal Aviation Administration limit most small commercial drone operations to daylight hours and require operators to get certified every two years....Read on FAA completes landmark rules for commercial drones