Blog?

My sister persuaded me into starting a blog, she told me that when she was my age she had already started reading blogs. I don't really know what to write or what to do, I have really only started now getting interested in all this stuff. I'm planning on getting a proper camera so I can take nice photographs - like my sister. Her photos are amazing and I would really like to achieve the skills needed in taking good photographs. If I get there, I can post them here.