Macbeth Act I Response

In highschool I've read Othello, Romeo and Juliet, and Hamlet. However, we usually read them as a class and reading/interpreting it for myself is going to be new. I like to read it aloud with someone though because it gives a more realistic feel for the story. I actually like act one because of all the conniving and scheming that is going on. Macbeth says," What thou art promised. Yet do I fear thy nature;/ It is too full o'th' milk of human kindess." From these two lines, I took that Macbeth thought it unnatural for the witches to be so kind-hearted to him. He thinks there is something else that they want secretly. I also found it astonishing that the wife, Lady Macbeth, was more persistent to go through with the murder than Macbeth was. She laid the whole plan out for him and he just agreed. I'm interested in seeing what the rest of the story will unfold. I also want to see who else is going to die because in most of Shakespeare's plays there are numerous killings.