How many forms of lightsaber combat are there?

Answer 1

Within the Star Wars universe, there are seven forms in the Old Jedi Order and three in the New Jedi Order. The Wookieepedia answer has a lot more information, as well as articles for each of the forms and is linked under related links below.

As a note, there is also a "form zero" which, instead of teaching how to wield a lighsaber, teaches when to use a lightsaber.

Answer 2

There are seven recognized forms of lightsaber combat in the Star Wars universe, each with its own style and techniques. These forms were developed over generations by the Jedi Order to match different combat scenarios and opponents.