map-making for noobs

[jleeto]

   So I wanna start at least making single-player maps for FPS games.    I thought it might be fun to make some old-school Doom levels.   Are there any map editors for Doom that a noob like me can use?   Something that you can see the textures in the map while editing?  Something that you can tap a key and walk around in real quick to see how it plays as you build it?      Is there a windows based Doom level editor?   With tutorials?       

[Bad Sector]

DoomBuilder 2 looks very simple:

[jleeto]

This is great!!     

   Is there a version of this editor for Duken Nukem 3d too?

[Bad Sector]

AFAIK, no but for DN3D you should try EDuke32 and Mapster32. These are windows ports and extremely improved versions of the Build engine, supporting true 3D, models, high-res textures and other stuff. Also there is a new renderer in works that adds per-pixel rendering support, dynamic lighting and shadows and other stuff. Check the 3D Realms forums.