So get to it. I’m too lazy and already a member of too many forums, so I’m not joining the ones over at NBI. But yes, you should start a blog. And there is really only one piece of advice you need. Write steadily, somewhere between 1 and 3 times a week. Do it for a year, and people will find you. Do it for two years, and people will recognize you. Do it for three years, and you’ll be a veteran like most of the people on those forums giving advice.
But if you are going to do it, do it for yourself. If blogging only makes you happy when you have a dozen comments at the end of each post, you’ve probably missed the point of blogging altogether.