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You're 16 so being aware of this means you're basically halfway already. Imagine you had to race the world and though you aren't the quickest runner you got a 10 year head start.
At this point invest mostly in yourself. Education, skills, anything marketable. Depending on where you live, maybe go to college, maybe don't. Learning a trade can be a better financial choice in many cases.
Start investing and saving when you are pulling a decent salary. Investing isn't hard, watch the documentary "How to win the loser's game". But either way it's a bit early to really start, just make sure you get a reliable source of income first.
Secondly a dollar saved is a dollar earned. Over the next 5 years (and after) you'll see people around you spend 100s per month on coffees, car loan payments, $10 beers in clubs etc. Just keep a cool head and think about not what is cheap, but what is valuable. A chill night in a normal bar with your friends is easily worth the 20 bucks you spend, the 5$ coffee isn't.
Also never marry