"having read it" - this is not a complete sentence. It doesn't have a subject and it doesn't have a tense. "I had read it" - this is a complete sentence, but it needs context.

I'm not sure if you've made the correct construction on "having read it". The correct construction of the present perfect is "has/have read something" and the past perfect os "had read something". Give me more info on what you really want to know, maybe I can help you more.

Hard to add to what Preachey and Teacher Jan already said. A full context, or at least full sentences, would help a lot in getting a better answer

"Having read it" can be used to introduce a dependent clause (but it's incomplete by itself.) For example, "Having read it, I expected the movie to be as good as the book." Your second example could be used like this: "I read it, so I anticipated that the movie would be as good as the book." Are you also asking the difference between "expect" and "anticipate?" They're basically the same. http://www.learnersdictionary.com/definition/expect http://www.learnersdictionary.com/definition/anticipate