Both Fidelity Investments and Born to Sell provide covered call tutorials that have received positive reviews by independent financial reporters. Investopedia also offers a basic tutorial on covered calls that gives new investors a starting point to work from.
Fidelity Investments' covered call tutorial includes information on understand the investment strategy, examples of covered calls, benefit and risk analysis and advanced strategies. Blain Reikensmeyer of StockBrokers.com gives Fidelity Investments 4.5 out of five stars. In his breakdown of the company's services he gives them high marks in education and research, calling those areas "Best in Class."
Born to Sell offers a large tutorial which includes definitions and explanations, examples, return potentials, risk analysis and many other areas. Daniel Packer of Sweating the Big Stuff comments on the quality and quantity of information and the options for continued support that Born to Sell offers with its subscription services.