I love WordPress. So does Google. They're a pair made for each other.
But simply starting up a blog on WordPress itself or one your own domain name isn't enough.
If you're a newbie to blogging, there are things you need to know. Obviously you have to have your blog topic all thought out (and I'm not talking about the posts themselves, I'm talking about what your whole blog is going to be about.). And I'd advise, if you're using WP to build a corporate site, to sit down with a pen and paper or better yet an Excel spreadsheet and work out the framework of your blog before you press the 'install' button on WordPress.
Once you've done all that, and preferably chosen a good professional theme (as professional themes are better built for SEO), there's something you should read: 43 Blogger Tips for WordPress Installations.
Andrew Rondeau is from the UK and a very experienced and successful blogger (by the way, I am not affiliated by him, but rather impressed by his entrepreneurship). While I implement a lot of his tips on my site and sites I build for others, Andrew puts this advice so succinctly and clearly it's worth directing you to his post.
One thing I can add to Andrew's advice is to tweet your blog. Get on Twitter. Install Twitter Widget Pro on your site and tweet every post. More than once, if you can find something different to say about your post on a separate tweet or two.
Social media works best when it works in partnership: blogs with Twitter, or YouTube, or Facebook. Try and combine your social media memberships with your blog.