this is a standard master detail page set.
the master page is a listing of the blog articles, the listing contains a link to the details page that passes the ID as a querystring. the details page shows the full blog by querying the database using the ID in the URL.
there are many tutorial on the web for creating a master detail page set, here is one i found through google:
you could also use the Data Bride Data Assist pages wizard to crate the results and details pages for you.