Welcome, fellow idealist. I have respect for you, being courageous enough to open your eyes to something you could not even have perceived, let alone understood, before you stepped foot into this 2 dimensional world known as a "web page." In this web site, there lies all you need to know, for now, about the world consisting of many, and no, dimensions.
What is a "dimension," you may ask? Well, a dimension is simply a vector of direction or space that an object may occupy or move about in. For example, 2 Dimensional objects are completely flat, and 3 dimensional objects can move in 6 directions.
There are some symbols in this site you may not understand: