There are a lot of people out there who teach online. What you didn't mention is what kind of photography you want to learn. Karl is a commercial/product shooter mostly and uses very high end Bron lighting equipment.. Is that what you want to learn? If so, he's worth the money. But, if you want to learn portraiture, weddings, landscapes, or just photography in general. even though he touches on those areas, there are better, more in depth places to go. But it depends on which area of study you are more interested in.
You might want to look into sites like KelbyOne and Creative Live. They h ave many many courses from photographers of all walks of life. Basics, Street, Portraiture, Weddings, Commercial, Seniors, Landscapes, etc. Karl is good but the other sites allow you to learn from a lot more photographers.
Just about al sites have a month to month fee. So if you only want to go on for a month, you only pay about $10-$20 and then you can decide later if you want to pay another month. Or pay for a whole year and get a nice discount.
