Congrats with your new Mac. I'm sure you will only get more addicted to it the next couple of weeks.
Removing an application is indeed as simple as dragging it to the bin. In most cases this will remove all of the files of the parent application, however, sometimes there can be some leftovers. These are not really harmful as they don't jam up the system like on Microsoft Windows (which has the dreadful registry), but just to be sure I recommend a third party application for removing applications.
AppZapper was mentioned a few times but this isn't free software. May I suggest uApp? This is a free software package and can be found at
http://uapp.en.softonic.com/mac. It removes all application folders and purges configuration files. It has a very straightforward interface. Just launch uApp, drag your application in it and hit 'Delete'. Boom, as Steve would say, you're done.
Cheers.
Jimmy Cappaert