From Magento Better Blog version 1.0.4 you can:


Modify CMS Homepage

From Admin panel > CMS > Pages > Homepage (your current Default CMS Homepage)


Open Content tab and insert following snippet:


Display 5 recent posts in Magento blog  

{{block type='mageplaza_betterblog/post_recent'  post_count="5" block_name="Latest from the blog" template='mageplaza_betterblog/post/recent.phtml'}}

   


Display 5 posts in specific category id

 

 {{block type='mageplaza_betterblog/post_cat'  post_count="5" category_id="4" block_name="Fashion News" template='mageplaza_betterblog/post/recent.phtml'}}

 


Flush Cache


Now flush Magento cache, navigate your browser to frontend and check result.


Any questions, free to create a topic in Magento forum