- 1 十年前最愛解答
Say like you have a table
cell A1: Student ID
cell B1: Student Name
cell C1: Student date of birth
cell A2: 1001
cell B2: Chan
cell C2: June 12th
cell A3: 1002
cell B3: Lee
cell C3: April 17th
say you want to lookup student name by referring to their student ID,
so you put  in cell F1
and then put a vlookup formula in cell G1
Explanation of the formula:
F1 - refers to the lookup value, in this case is 
A:C - refers to lookup range, usually is the range of the table
2 - refers to the lookup column in the table , if you put , it will look at column 1, if you put  it will look at column 3 , which is the date of birth
false - means find exact match , true will be the closest match of the lookup column
in vlookup, the lookup value has to be the left most column in the table, if you switch the order of the column , you have to adjust the lookup formula.
Besides vlookup, there's lookup and hlookup , but vlookup is the most common one.
let me know if you have any question.