Ok, sorry for the long post, but my english is not that good that i can explain it in a few sentences:
About the Blog Posts: I write them about some random topics. most content is written "on the go", you know, i just start writing and some of that is just some bullshit content as why you should buy socks for your grandma for christmas.
and thats basically it. all my topics are like
buy socks - relatives - occassions - cheap or some other keyword like red blue whatever
my topics are all like
"Buy red socks for christmas"
"buy blue socks for valentinsday"
"buy blacks socks for cat"
"buy green socks for your girlfriends dog"
you know, shit like that, most people dont even read my blog. they just read the main article. My main article and my 10 sub articles are high-content pretty well done. and people click on them and read them. the blog posts - no one ever licks on my blog and reads the shit i'm writing, but well you have to understand your customer. most people stay on may homepage for about 60 seconds, then they check my products for about 30-50 seconds and after that they check one of the main articles and read it for maybe 30 seconds (i guess they are only reading headlines, and are just skipping). after that, they may return and customize their product and buy. but no one ever clicks on my blog. especially as 50-60% of my visitors are mobile, 5% through tablet-devices and the rest is pc ect. this works for me, because the blog is purely for google.
LINKING:
i have a main article and sub articles
Buy Socks
-- Buy socks for Christmas
-- Buy socks for Valentinsday
I never link words like "click here", doesnt make any sense to me (though, germany is maybe different than american markets. in germany people often use thinks like buy-socks.xyz, americans would rather gat a domain like buysocks.xyz)
if my mainkeyword is alone without relevance to the sub aticle, i link it to the main article. for example:
"Buy Socks is not that expansive" - i link "buy Socks" to the main article"
if the sentences is "Buying socks for christmas is not that expansive" i just take the whole sentence and link it to the sub article buying socks for christmas (the sub article links to the main keyword again anyways). and yeah, that's basically it. it is just more natural to me linking whole sentences but maybe that is just my "thing".
Hope this helps!
EDIT: As i said, this is no churn and burn tactic. i have about 200 - 300 posts on my blogs on e-commerce stores. when i started doing e-commerce , i was writing like 3 - 4 articles related to my niches per day. nowadays i'm only writing like 1-2 articles per week to tell google that "i`m fresh and new"
EDIT2: I have links, must mostly links from "obvious" places like pdf shares, image shares ect. and i have a professonal social sharing account for my stores. everytime i write a blog post, i share it.
THINGS THAT NEVER HAPPEN BUT THEY DO HAPPEN: My google+ shared post was ranking higher for my main keyword for about 2 weeks, then my website lol