Diane Aull said
1 year, 1 month ago: Not sure of the answer to the first question (I don’t use blogspot), but I can maybe help with the second. 
When they say to “target an audience” that just means to write your posts with a particular audience in mind. (This is probably more important with business/marketing blogs than for personal blogs.) Think about who you’d most like to have reading your blog, and what you’d most like to have them think/do after they’ve read it. Then write your posts to appeal to them. (For instance, if your target audience is “people like you” then write your posts to appeal to yourself.
)
Use the language and terminology they’d use. Write about topics they can relate to. Address their concerns. Appeal to their emotional hot buttons. Spark their enthusiasm.
A great example from pre-social media days could be Erma Bombeck. Her “target audience” was “middle-class suburban housewives.” So she wrote thousands of newspaper columns (and book after book) about cleaning house, grocery shopping, raising kids, etc. Her writing resonated with that target audience. And it worked, even after she had become a very wealthy woman and probably didn’t do a whole lot of her own housecleaning any more, because she kept writing to her target audience.
If your readers come away thinking, “Yes! Barbara knows exactly what it’s like — she really hit the nail on the head with that post,” then you’ve done a good job of audience targeting.