If you wish to do more than "look" at your blog e.g. make another post or do some editing, sign on using your your ID and password here:
URL (blog address)?
When you click on "view blog", you will see your blog.
Right click and copy the contents of the address bar, your bog's URL address (http://.....blogspot.com/) paste this URL in your email to share your blog with all your friends. (do not type URL, it leads to errors)
Save your URL in your favourite list (bookmark).
Here is a link giving more details: