What 3 preparations had Montresor made in order to carry out his revenge?

Montresor has  meticulously planned the time, the place
and the method of his revenge well in advance. The following are the preparations which
Montresor makes to take his revenge on
Fortunato:

1. Time: Montresor
decides to take his revenge at "about dusk, one evening during the supreme madness of
the carnival season," so that every one in his house especially the servants would have
gone out and that he would be able to commit his heinous deed completely unnoticed by
anyone. He had cunningly ensured that the servants would not return home that evening by
lying to them that he will be returning home only next
morning.

2. Place: Montresor
chose the innermost crypt in his vaults so that Fortunato's cries would not be heard by
anyone. He had also arranged to have the building stones and the mortar ready at hand to
wall in Fortunato. When he accompanies Fortunato into the vaults he carries with him the
instrument of revenge-the trowel.

3. The
Method: All the while "smiling in his face" Montresor flatters and traps
Fortunato by exploiting his "weak point" : Fortunato "prided himself on his
connoisseurship in wine," and Montresor deceives him by saying that he does not wish to
trouble him and that he'd rather  seek Luchresi's opinion regarding the quality of the
Amontillado that he has bought. At once Fortunato takes the bait and accompanies
Montresor into the vaults to prove that he is better than Luchresi. Once inside the
vaults, Montresor gets him drunk to slow down his reflexes and then leads him to his
death.