Do save your btc.

Don't gamble.
Don't get scammed.

about earning btc, umm i make mine by trading because im really good at it.
remember when you trade that there are pro traders who trade better than you and win your money from you. so dont use all of your money in  trading, and be prepared to lose all of your investment(so only use a little if you are gonna trade).
trade using technical analysis or you will lose most of the time if you dont.