I came across a book at Barnes and Noble named Getting Rich with Options by Lee Lowell that has a chapter on call selling. It gives real world examples as to how selling options can provide an extra source of revenue for a stock holder. I recommend heading to your library or book store and checking this book out. I can't say I have a full grasp of the rest of the book's strategies yet, but it normally takes a few times to read before I get all the info.
If you have any books or reading materials that would assist in the development of this subject, feel free to post.
As always, I do not fully divulge information on open trades until they are done. When the trade ends, I will give out the rest of the details (stock name, price purchased, call purchased, news on company/ETF, chart info) that sort of thing. Please feel free to ask questions and I will answer them the best I can without endangering the trade.