Hi
In my POV, please start working, rather then waste your time studying. Travel Industry is not rocket science where you need to study so much. Just get Started, experience will teach what you need to know.
To have wholesome experience of Travel you can join Tour Operator Companies. They offer experience in All round travel industry :
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Air Ticketing, Cruise, Land Travel, Hotels, Sight Seeing, MICE,
You will learn to make itenaries, travel budgets, sales and marketing branding and promotions
Over time you will also get a chance to travel to exotic places, meet wonderful people and make people happy by seeing them experience wonderful world.
To enhance your profile, learn foreign languages : French, german, Arabic, Spanish etc.
Aim for big names : Thomas Cook, Cox & Kings, SOTC, ITH, Carlson Wagon Lit, ITH, Raj, AKbar, Shreya, Kuoni,
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Airline will confine you to desk job as reservation clerk or give you grilling profile of corporate / retail sales, run around in the ity convincing travel agents to sell your airline.
Exposure is limited to sectors you will be selling. Grilling targets and awesomely competing Air Travel Market.
I can say, I have represented 3 inte'l airlines in my life, Experience was amazing and exhausting !
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Teaching ?? How old are you ? and how do you feel justified taking up teaching as your career in such start of your life. Build some experience, live some stories, see the world and then later in your life, come back to teaching reminiscing and sharing your days of glory and experience to young students, that will earn you more respect and satisfaction then just education transfer.
Think about it ...