I think that Macbeth was at first not as "worried" about the witches and their curses as then on in the play he finds out that every thing that the witches has been tellin him are true.
Strictly speaking, it is in act 1 scene 1 where the witches say "Upon the heath/ There to meet with Macbeth."From this we know that Macbeth is on a heath. It's not much information but it is the first we get.
The witches never said "Macbeth, Macbeth, Macbeth". In Act 4, Scene 1, both the First Apparition and the Second Apparition begin their prophecies by calling out, "Macbeth! Macbeth! Macbeth!" Macbeth responds to the First Apparition by thanking it for warning him against the Thane of Fife (Macduff). Macbeth responds to the Second Apparition with: "Had I three ears, I'd hear thee."
The witches in Macbeth do not have individual names. They are only referred to as the three witches or the Weird Sisters.
MacBeth meets the three witches with lady MacBeth
Macbeth.
The witches only gave Macbeth prophecies. It was his decision to do so after Lady Macbeth persuaded him. Although the witches' intentions was probably to cause this murder, the witches did not make Macbeth muder Duncan.
Macbeth did not like what the witches had told him.
Yes, Macbeth is portrayed as a valiant and respected warrior before he meets the witches. There is no indication of guilt or wrongdoing in his character until the witches plant the seed of ambition and power in his mind.
The witches don't make Macbeth perform any dark acts, such as killing King Duncan; they just put the idea in his head. The witches tell Macbeth he is the Thane of Cawdor (which he doesn't know yet) and also tell him that he will be king. Once Macbeth finds out he is in fact the Thane of Cawdor, he begins to believe the witches' prophecies. Lady Macbeth convinces him that the only way Macbeth can be king is by killing King Duncan, and he does so. The witches' role in making Macbeth a tragic hero is to serve a catalyst for Macbeth's dark thoughts.
They have insight into the future, which is why they can make prophecies.
Lady Macbeth echoes the words of the witches when she says "All hail, Macbeth, that shalt be king hereafter!". This echoes the witches' prophecy that Macbeth will become king.