One of the misconceptions about starting a blog is that you need to be a great writer to be successful. Nothing could be further from the truth. People read blog sites to get a personal perspective on things, so most bloggers write in a very informal and conversational style.
And because of the format, many successful bloggers will write about a variety of topics on the same blog.
In addition, you don’t need to be an expert on any of the topics you write about to have a successful blog. For example, visitors to a cooking blog don’t want to read a textbook from a food scientist, they want to hear the experiences of someone who has actually cooked some real meals, mistakes and all.