These are leverage products for experienced option traders not beginners. http://www.cboe.com/products/stock-index-options-spx-rut-msci-ftse
I’m no longer an active trader. I’m a sales person for a US registered broker dealer. When I was an active trader, my focus was on single stock options plus a few ETFs like GLD and USO as a market maker. I was a member of the AMEX. Cash settled indexes are only on the CBOE. I had no edge here.