By just reading tutorials, even a not so techy person can improve the appearance of their blog. With the addition of photos, video, music and web links, one can add interest and depth to the look and feel of their blog. Readers want to see a blog that is multidimensional, not just reading words day after day.
Another way to take a blog to the next level would be to be informed about your subject. Look for credible sources online, in books, in magazines, etc, and use this information on your blog. If you post inaccurate information and readers know it is a inaccurate, they will not want to come back. If a reader leaves your blog having learned something new, chances are they will be back. Posting credible and accurate information will keep readers coming back.
Tagging and categorizing properly, can also link many people to your blog through online searches.
Bloggers familiar with the many social media resources, can increase their readership by either linking their blog into a particular resource, or simply asking people in the varying social media platforms to check out their blog. Also, by simply being a blogger you can get your name out their by commenting on other blogs or websites.