Just below the light bulb in the right hand column is an orange button. If you click it, you will subscribe to this blog in a feed.
The feed will usually appear in either your browser's bookmark bar or in the feed folder where your bookmark folders are. You then move it wherever you want.
When there is something new on this blog, it will say (1) next to the feed. If there are two new posts, it will say (2).
Click on it, and the information from the posts appears almost instantly on your screen. You don't have to go to the blog and wait for the page to load. You don't have to visit to see if I posted yet or not.
If you dislike having the feed, just drag it to your trash.