what are good books to learn how to make mods?

[JMaster]

I want to learn how to make mods for fps games like halflife and UT.. what are good books that you would recommend?

 

[FrogDog]

It might not be quite as easy as you think. I'm guessing you need to know a programming language (C++) and then be able to use OpenGL. Here's a good C++ book...

Beginning Visual C++ 6

 

[GasX]

Pick the game you want to work on (e.g. Half-Life) then learn the Level Editor. Most people are self taught with the aid of the web.

As far as modding the engine, see above post.