These tutorials cover some tutorials related to editing tools.
ZDoom & WadAuthor
WadAuthor Basics
Making Multi_Map Wads for WadAuthor
The WadAuthor WCF File
Quickly Adjusting Sector Heights in WadAuthor
Setting Up DMapEdit for ZDoom Editing
Using WinTex To Insert a Lump
DeepSea Graphic Import and Texture Creation