You should really be raising the scope of your question, as the film industry is much larger than you may think. In fact, a lot of what you posted doesn't entirely fall under "film industry" either. The key here is research will give you plenty of help, as well as making connections anywhere you can. For example, there's a large difference between working on the production of a feature narrative film and working as an all-in-one videographer for digital marketing. An important plan here is to try to target the area(s) you think you MAY be interested in, and look into each one. I can offer more advice/specifics, but get back to me with what about film interests you the most right now (shooting with cameras, setting up a film shoot [i.e. urban night time shoot even], editing a ski edit, putting together a sick soundtrack for something, etc. etc.)
As far as making bank, that takes a while and a lot of drive- and knowing what opportunities you want to jump on to get you where you want to go. Most of these jobs don't start out paying well, and are hard work all the way along.
As for me personally, I freelance and do shoot weddings (though not as much anymore), corporate web content, digital marketing and so on. As for the poster above who said freelance keeps you in control of your content-- not usually true! you often are working a job someone else could be working, as a business sees it, and they will not hesitate to try to undercut you in terms of pay, or delegate work away to save money, etc. Working freelance requires a great deal of work on your part to keep client work secure and legal, and you have to really be on your game with delivering content that will keep them coming back (goes without saying). The freelance well can dry up really quickly too sometimes, hence the draw of doing larger contract work with a steady company over a longer period, or getting a steady full time position.