Values can be represented in many ways, such as integers, floating point values, strings, objects, etc.

Here's the most important list of variable types you'll run across in VB:

Integer	1, 2, 3, ... with the largest value = 32767
Long	Like integers, but with the largest value about 2E9
Single	0.2, 5.7, 24.12 ... any number with a decimal
Double	Like Single, but with the largest value about 2E308
Strings	Not numbers at all, but letters or special characters