Based on your comment about "learning as quick as possible" I thought you might be new to this and might benefit from knowing about flying for any kind of commercial purposes.
Forgive me if you know this information already, but using your drone for ANY type of commericial application, whether it be for remuneration or not requires a FAA UAV Part 107 certification/license. It doesn't matter what business you are in. It's not limited to professional photography but it extends to anything that might be simply tangential to anything that could be connected to a business if you connect the dots.
I just thought you should be aware in case you weren't already.