I was delighted to find land in my inbox one of the few email newsletters that I do keep and read. This one was from Business Link, a website I have visited many times and would urge you to consult as a first port of call with any business query. With great timing around my last couple of blog posts it gave me a link to a very informative guide on how to write a blog that people want to read!
Need I say more. Apart from that in order to actually write a blog you need to set one up. Using Google's Free Blog service, as I have done, you can easily be blogging before breakfast. You do need a Google Account but this just enables you to use all the other wonderful free tools from Google, including Google Analytics, which I would reccomend should be, if not all ready, in your websites to track your traffic.
Of course at any point you get stuck with all this stuff just drop me an email and see how I can help.