Setting up an alert for blog posts is a bit hidden.
Without a shortcut, the easiest steps I can find to setup a new alert are:
- Click a blog post
- Click "Posts" in the breadcrumb
- Click Actions -> Alert Me
To manage existing alerts, make sure you are within the site that contains the blog. For example, if your Posts list is at
http://server/Site/News/All/Lists/Posts/AllPosts.aspx then the site is
Then, click Site Actions -> Site Settings -> User alerts. The URL will be similar to:
To create a shortcut for users, simply create a link to the alerts page on the Posts list. The easiest way to get this link is by following the "End User" steps above. It'll look something like:
You can change the Source URL parameter to link back to your main page.