If I had to choose only one piece of advice for a new blogger, it would be to join a group of like-minded bloggers. I love that I found Green Moms Network not long after starting my blog. Not only do we exchange info on topics that interest us, but we also share blogging tips, answer each other's questions, share each other's posts, and more. We organize events together and share events from elsewhere, too.
Since then I have joined a couple of other groups, too. Search on Google or Facebook or look at the buttons in the sidebars of some of your favorite blogs. That's a great way to get in touch with a group that fits you and your page.