Most of the time I had to learn a topic in my life, at school mainly, I had to take a book and start reading about the origin of that topic.
Writing looks easy, but how it developed literature during the past centuries? Philosophy can be tough, but finding the line from the first philosophers to the actual way of thinking is way more interesting.
Photography for most of us took a different approach. We received a camera, we started to take photos, we enjoyed it.
Rarely we went over this path.
Also, there was a lack of information before Wikipedia started to help us!
Nowadays there are a lot of sources where we can find useful info about photography. So let's fill the gap.
But why should we care about studying photography styles or history?
Basically, if you want to have success in photography, you have to understand which could be your niche. History is full of photographers, but almost none of them was able to master more than one or two styles.
Each style needs a different personality. The approach to street photography is quite different from the approach to landscape photography.
The technique is different.
The equipment is different.
The goal is different.
Sure, each of us would like to experiment with as many styles as possible, no one knows which is his talent, before testing it!
-- end of the boring (necessary) introduction --
But now that we moved to XXI century, photography evolved and a lot of new branches of photography find everyday new talent and people interest.