I hear from a lot of people who want to write a blog. They want to get their stuff out into the wide world. But, before they do, they need to follow some basic rules. I have found this list instructive, and recommend it. Of course, before you read it, the primary rules to follow are to avoid poor grammar, avoid misspelling of words, follow competent sentence structure, and be yourself. The rest, as is said, depends on your talent and ability.