A reason why it is so hard to become a successful trader is because one does not know what rules to follow. Here are some rules that may help a put seller.
1)Choose a strike price far out of the current price. Current price minus 10-25%
2)Check on the history during the strike date.
3)Choose a strike price than can get you a 2-9% return per trade.
4)When to buy the contract you sold.
a)premium has more than doubled
b)stock price below the strike price you have sold