What is M.U.G.E.N?

M.U.G.E.N (also known simply as MUGEN) is a freeware 2D fighting game engine designed by Elecbyte. More information can be found on its Wikipedia page found here

How Do I download M.U.G.E.N?

The latest version of MUGEN is available on Elecbyte's site.Get the latest version of mugen (1.0) right here.

I am having trouble with configuring my mugen. Where do I need to post to get my questions answered?

The "M.U.G.E.N Configuration Help" board is where you should post to get your questions on how to configure your mugen answered.

I am interested in MUGEN creation. Where can I find some tips to get me started?

There are tutorials in a folder called "docs" within your mugen folder. Check out the tutorials to get some basic character creation tips. Be sure to check the files called air.html, cns.html, sctrls.html and trigger.html to learn the basics of mugen creation. There is a four part tutorial that shows how to make a basic character.

I am having a few problems with MUGEN creation. Where should I go to find a solution to my problem?

The solution usually exists within the problem domain. My lecturer told me that once. Alternatively, you can check out the 
M.U.G.E.N Development Help board. If you ask a question here, you are bound to get an answer, but endeavor to solve problems on your own.