I recommend Trading altcoins, but trading is very risky in general.
This is my method :
1 make a coin
2 make a game
3 make profit
The two first steeps are indeed difficulthttps://bitcointalk.org/index.php?topic=1051731.0Ultracheap now
long term holding
Make a coin? You mean make an alt? This doesn't really grown your bitcoin. Making a gambling game is also a good way to lose money if you're not careful. Many sites get hacked.