TO BLOG OR NOT TO BLOG

That is the question. Here I am trying to figure out this new system and the harder I try the more confused I get. I don't know  heads from tails. I think it would be easier to just talk on FB or by email. I can't figure out how to follow anyone. Now it says something like subscribe and when you click on that it says add URL. So confusing. I am lost when it comes to URL's and links. Don't quite understand them. If anyone out there can explain these things to me, I would appreciate the help.