Quote from Handle123:
It is very easily done if you legg into them, but if you want to do as a spread, you will have to email your broker the spread difference to be filled at. I believe Daniels is pretty good broker at spreading, but I think almost any are and I believe some platforms are better at putting them on. I have always called them or emailed.
There are a number of books on when to place spreads by dates, and a couple services like MRCI(Moore), but I have never seen an excellent book on how to trade spreads as in a method. There been a couple attempts, but none I have taken seriously. I been working on that for past few months myself.
I think for those who like to make a more consistent profit, spreads way to go, less margin and not as wild as outright trades. BUT still have to a well backtested method.