How to add jump break in blogger
First lets see how to add manual read more to any post.make a new post and there you will see the jump break option as show in image so when you add jump break just add it by pressing.
you can visit your blog to confirm.
Add Auto Read more in blog post
step1: For add adding auto read more in blogger first login your account and select your blog now go to template and edit html.
there you will see the coding of you template. press any where inside the code area and press ctrl+F but do not remove ant thing this may make your template different or may be it not works properly.
step2: Now find this code by searching
above that paste the given below code
now save the template and now your post will show auto read more jump break no need of manual adding every time.