If you don’t know the Greeks then you’ll buy strikes that won’t make money. You don’t need to be a master of Greeks if you have a view on the underlying and are looking for a way to lever up on a bet. But you still need to understand things like delta and gamma, because those are what will drive your pnl.
What
@Dustin is describing is harvesting volatility premia on 0day options. This is systematic (a beta return). If you did this every day, you will probably make 8-12% annually, which is normal for alternative risk premias. You might get lucky and make a series of positive bets — or not.
Tl;dr —Trading options is not like day trading stocks at all. Beware of simple strategies.