using entity reference fetch different fields automatically using entity reference, i am able to relate to nodes with one another. Thats great. The user while entering their blog has an option to relate it to nodes of my custom content type. This works great. Now i want that once the user has selected the node to be related to, the blog should not only show the title of the n node but also other fields from that referenced node. How can i achieve this?

Regards
On the content type that has the reference-field, on the "Manage Display" section, you can choose if you want "Label" or "Rendered entity", which will output the full node.