Does this work for backlinking?

So if a high pr site backlinks to a low pr blog, and i backlink to my site on the low pr blog, do i get a backlink
from the high pr too because it's linking to the blog i posted in??

If so, say that the high pr site linked to a post on that blog, does this mean only that post has a backlink or the whole
site does?

If only the post has a backlink then would the high pr site need to link to the main url of the site without subpages
for all the posts/pages on that blog to have backlinks?

Thanks.

once the low pr blog get some juice from the high pr one and you will get some better juice to your site. But no your site has no direct backlink to it from the high pr site

yes, only that post has a backlink from the high pr, but some better juice will get the whole domain

Only juice is transferred, there is no direct backlinks to your money site, but that juice is also more important for your website.

Link juice flows down the road and the amount if juice u r getting depends on how many are sharing the juice I.e the amount of out bound links to the donor site.

Do a G search for Matthew Woodward, hes a member here and has some great videos on tierd link building.