How to Insert Read More Links in Blogger Posts.

While writing a post in blogger post editor there is an potion called "Jump Break" which enable to insert the read more link anywhere you want in the post. See the image below.

That option is actually used to insert the Read More link inside a post in blogger. Click this option where you want to insert the Read More link. Usually people insert it after the first paragraph in the post.
Inserting this link will only show that part of the post that is above the "jump break" on the home page. In place of the remaining post it will show a link as "Read More" to read the full post.